| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 342109000 | Combined with determining distance | 58 |
| 20080218402 | Target detector and target detection method - A target detector for accurately detecting frequency components of the stationary target, detecting a moving target from the remaining frequency components and suppressing erroneous detection of the moving target. The detector comprises: a transmitting and receiving section for transmitting a transmission wave and receiving a reflected wave from the target, the transmission wave having a frequency rising section where the frequency increases and a frequency falling section where the frequency decreases; a mixer for mixing the transmission wave and the reflected wave to generate beat signals; a frequency calculating section for calculating frequency components of the beat signals in the frequency rising section and the frequency falling section; and a stationary target frequency detecting section for, when a level of the frequency components in one of the frequency rising section and the frequency falling section exceeds a higher threshold and a level of the same frequency components in the other section exceeds a lower threshold as well as a level difference between both the frequency components is within a predetermined range, detecting these frequency components as those of the stationary target. | 09-11-2008 |
| 20080272957 | Method and device for determining the relative velocity of objects - A method and a device are provided for determining the relative velocity of objects by using transmitted and received microwave radiation. The transmission signal has a carrier frequency which is increased or decreased in a ramp-like manner, and the transmission signal is additionally modulated using a PN code sequence. The reception signal is mixed using the time-delayed PN code sequence and integrated to form a complex correlation gain. The relative velocity of the objects is determined from the variation over time of the correlation result for the mixed and integrated reception signals, and optionally, the distance of the objects is determined from the time delay of the PN code sequence. | 11-06-2008 |
| 20080278366 | Method and Device for Determining the Vehicle Class of Vehicles - The invention relates to a method and device with which a vehicle traveling through a radar cone is classified by means of length criteria. The length criteria are formed by the difference of the driven distance that the vehicle covers, during which it reflects the radar beam, and the passage distance of the vehicle through the radar cone, which gives a more or less precise measurement for the vehicle length according to the accuracy of the determined passage distance. For determining the passage distance, range values are derived from the radar signals. | 11-13-2008 |
| 20090009381 | Radar System - By pulsing transmission radio waves of continuous wave radar, clutter components included in a reception signal are suppressed. | 01-08-2009 |
| 20090102699 | Method for Detecting and Documenting Traffic Violations at a Traffic Light - A method for detecting and documenting red-light violations and/or speeding violations in which a radar beam is directed across all lanes of a roadway of interest and in which the speed and the position of a vehicle which passes through the radar beam are determined from the radar signals so as to be able to predict the probability of a red-light violation from the speed and the determined distance of the measured vehicle from a stop line and to trigger the recording of images of the violating vehicle at predetermined distances from the stop line. | 04-23-2009 |
| 20090109084 | Target detection device and its detection method - This invention relates to a target detection device and its detection method, comprising: a transmitting unit for transmitting a detecting pulse to detect target which then reflects the detecting pulse to generate a reflected pulse; a plurality of measuring units, located at different positions respectively which receive said reflected pulse and generates measured values of distance and measured values of velocity according to the reflected pulse received; a plurality of two-stage linear Kalman filters, corresponding to said plural measuring units respectively, each of said plural two-stage linear Kalman filters proceeds an operation according to the measured values produced by corresponding measuring unit so as to generate respectively the estimation values of distance, velocity and acceleration; an arithmetic unit connecting to said plural two-stage linear Kalman filters, which proceeds a triangulation operation according to said estimation values so as to generate distance component values, velocity component values and acceleration component values with respect to the target. | 04-30-2009 |
| 20090201193 | Radar sensor and method for analyzing objects - A method and a radar sensor for transmitting frequency-modulated transmitted signals and receiving partial waves reflected by objects in the sensor detection range. A frequency shift of the received signal relative to the transmitted signal is determined for each object reflecting in each frequency ramp, it being possible to determine the relative speeds and the distances of the detected objects from the combination of frequency shifts of a plurality of ramps. The objects detected in preceding measurement cycles are stored in a memory, their relative speed and their distance being computed in advance for a future measurement cycle. The expected frequency shifts are determined and the frequency shifts of a plurality of ramps are combined in order to determine the relative speeds and the distances for objects that have not yet been stored in the memory. | 08-13-2009 |
| 20090212995 | DISTRIBUTED ITERATIVE MULTIMODAL SENSOR FUSION METHOD FOR IMPROVED COLLABORATIVE LOCALIZATION AND NAVIGATION - A computer implemented method for fusing position and range measurements to determine the position of at least one node of a plurality of distributed nodes is disclosed. The method includes (a) measuring the position of at least one node; (b) computing an estimate of the position of the at least one node based on the measured position using a filter that takes account of past estimates of position; (c) receiving an estimate of position of at least a second node; (d) measuring inter-node range to the at least a second node; (e) combining the measured inter-node range with the estimate of position of at least a second node using a second filter that takes account of past estimates of position to generate a refined estimate of the position of the at least one node; and (f) when a change in the position of the at least one node is above a predetermined threshold value, setting the refined estimate of the position of the at least one node to the estimate of the position of the at least one node and repeating (c), (e), and (f). | 08-27-2009 |
| 20090219191 | VEHICULAR LAMP - A vehicular lamp includes a lamp chamber formed by a lamp body opening forward and a transparent front cover attached to a forward opening portion thereof; a lamp unit disposed within the lamp chamber; a millimeter wave radar for sending a millimeter wave to reflect off of an object in order to detect a distance and a relative speed of the object; and a millimeter wave direction-changing mechanism for sending forward the millimeter wave sent by the millimeter wave radar from a back surface side of the lamp unit, without reflecting the millimeter wave on a rearward side of the lamp unit. | 09-03-2009 |
| 20090237292 | METHOD FOR MEASURING THE RADIAL VELOCITY OF A TARGET WITH A DOPPLER RADAR - An embodiment of the invention includes a step of transmitting an OFDM waveform including several frequency carrier signals transmitted simultaneously, the frequency carrier signals being coded in order to improve the Doppler response. An embodiment of the invention includes a step of receiving the echoed waveform from the target. The initial phase of each frequency carrier signal is recovered from the echoed waveform. The recovered initial phase of each frequency carrier signal is cyclically shifted in order to compensate for the Doppler effect and subsequently decoded. A compressed pulse is synthesized from the decoded initial phases. | 09-24-2009 |
| 20090243913 | RADAR DEVICE AND CONTROL METHOD OF RADAR DEVICE - This radar device includes: a transmitter to transmit a transmitting signal whose frequency is periodically increased/decreased at a predetermined rate of change; a mixer to generate a beat signal by multiplying a received signal being transmitted by the transmitter and reflected back from an object to be detected and the transmitting signal; a frequency detector to detect a frequency of the beat signal; and a controller to control the rate of change of the frequency of the transmitting signal so that the frequency of the beat signal detected by the frequency detector becomes equal to or larger than a cut-off frequency of a flicker noise caused by the mixer. | 10-01-2009 |
| 20090289832 | Radial gap measurement on turbines - Radial gap measurement on turbines by a microwave measuring method and an evaluation of a Doppler effect which varies according to the size of the radial gap is described. At least one radar sensor embodied as a transmission and reception unit is provided in the wall of a turbine housing which is radially oriented towards the centre of the turbine. The relative speed of an outer end of a turbine blade, dependent on the size of the radial gap, is evaluated many times in relation to the radar sensor during the passage of the blade end past the same, and the course of the relative speed over time on the zero crossing constitutes a measure for the radial gap on the basis of the relation between the absolute value of the relative speed and the incline thereof in the zero crossing. | 11-26-2009 |
| 20090295623 | RADAR RECEIVER AND A METHOD FOR PROCESSING RADAR RETURNS - A method for processing received radar returns of a radiated wide-band arbitrary waveform in a wide-band radar processing system using spectral processing. The received wide-band radar returns are undersampled by using a first sampling rate to obtain an undersampled digital wide-band radar waveform. Spectral processing is performed on the power spectrum of the undersampled digital wide-band radar waveform in order to obtain a discrete ripple frequency power spectrum of the undersampled digital wide-band radar waveform. Ripple frequencies indicating radar targets are located in the discrete ripple frequency power spectrum of the undersampled digital wide-band radar waveform. A radar receiver, a digital wide-band radar processing system and a computer program product. | 12-03-2009 |
| 20100019951 | METHOD FOR DETERMINING A VARIABLE - A method for determining a variable associated with an object, the object having a plurality of points suitable for reflecting measuring signals, a probability of reflections occurring at these points is taken into account for evaluating at least one measuring signal. | 01-28-2010 |
| 20100066588 | IMAGE PICKUP DEVICE FOR DETECTING MOVING SPEED OF SHOT OBJECT AND METHOD THEREOF - An image pickup device for detecting a moving speed of a shot object and a method thereof are described. First, a coordinate of the image pickup device and a coordinate of the shot object are obtained at a first time point. Next, a coordinate of the image pickup device and a coordinate of the shot object are obtained at a second time point. Then, a moving distance of the shot object is calculated according to the coordinates of the shot object at the first and second time points. A moving speed of the shot object is calculated according to a time difference and the moving distance. Afterward, the obtained moving speed is displayed on the image pickup device, such that the user knows about the moving speed of the shot object. | 03-18-2010 |
| 20100207806 | PULSE RADAR APPARATUS - A pulse radar apparatus, which includes transmitting means for transmitting a pulsed wave and receiving means for receiving a reflected wave of the transmitted wave transmitted by the transmitting means and calculates at least one of a relative distance and a relative speed with respect to an object based on a relationship between the wave transmitted by the transmitting means and the wave received by the receiving means, is provided with pulse width varying means for varying a pulse width of the wave transmitted by the transmitting means according to a position of a required detection range where calculation of the at least one of the relative distance and the relative speed with respect to the object is required. | 08-19-2010 |
| 20110018755 | OBJECT DETECTING APPARATUS - In an FM/CW type radar device (R), when object candidate information storage means (M | 01-27-2011 |
| 20110025552 | High-Frequency Module and Method of Manufacturing the Same, and Transmitter, Receiver, Transceiver, and Radar Apparatus Comprising the High-Frequency Module - A high-frequency module according to the present embodiment includes a substrate, a circuit board, and a waveguide. The substrate has an input-output portion for high-frequency signals on one surface thereof. The circuit board has a dielectric waveguide line with its end face exposed, and is placed on the one surface of the substrate such that a virtual plane extending beyond the end face is intersected by the one surface of the substrate. The waveguide has openings at ends thereof, in which one of the openings is connected to the end face of the dielectric waveguide line, and the other opening is connected to the input-output portion of the substrate. | 02-03-2011 |
| 20110095939 | PROCESS AND SYSTEM FOR DETERMINING THE POSITION AND VELOCITY OF AN OBJECT - A process for determining the position and velocity of an object is disclosed. The process comprises: -generating a first burst of pulses at a first pulse repetition frequency and subsequently receiving a first set of signals characteristic of the range and velocity of the object; -generating a second burst of pulses at a second pulse repetition frequency and subsequently receiving a second set of signals characteristic of range and velocity of the object; -generating a first data set representative of range and corresponding velocity values from the first set of signals; -generating a second data set representative of range and corresponding velocity values from the second set of signals; -summing a magnitude of a signal strength from each of the first and second data sets at corresponding range and velocity values; and, -comparing the magnitude of the summed signal strengths to a threshold value. | 04-28-2011 |
| 20110122013 | RADAR APPARATUS - The present invention includes: a transmitter/receiver | 05-26-2011 |
| 20110122014 | OBJECT DETECTION WITH MULTIPLE FREQUENCY CHIRPS - A system and method are disclosed for the generation and processing of waveforms utilized to modulate the carrier frequency of a microwave sensor employed, to determine the range and velocity of an object of interest. The system and method result in improved performance in environments with high levels of interference. | 05-26-2011 |
| 20110234451 | METHOD AND DEVICE FOR DISTANCE MEASUREMENT - A method and a device provide distance measurement between two points or one point on a path and a rail vehicle. In order to achieve a high measurement accuracy, the measurement of the propagation time of a radio frequency identification (RFID) signal is provided between the points or the point on a path and the rail vehicle. | 09-29-2011 |
| 20120001791 | Radar System Having Arrangements and Methods for the Decoupling of Transmitting and Receiving Signals and for the Suppression of Interference Radiation - Radar system for covering the surroundings, designed such that one or several sequences of identical or similar individual signals are radiated per transmitting antenna in a measuring cycle, which sequences are interlaced where appropriate, wherein the average time interval of said individual signals is greater than the propagation time of received signals that corresponds to the maximally interesting distance, particularly for determining the relative velocity of objects and for increasing the detection sensitivity. | 01-05-2012 |
| 20120056773 | Radar apparatus for use in vehicle - The radar apparatus includes a target candidate detecting means for detecting a peak frequency at which the intensity of the power spectrum of a beat signal peaks as a target candidate, a road shape recognizing means to sequentially connect, along a predetermined direction, the target candidates detected to be stationary and present within a reference distance from one of the target candidates set as a reference target candidate for one or more measurement cycles and recognize an area formed by the sequentially connected target candidates as an edge of the road, a cruise environment estimating means to determine whether the cruise environment is a closed space or an open space based on the power spectrum, and a reference distance correcting means to shorten the reference distance when the cruise environment is determined to be a closed space. | 03-08-2012 |
| 20120092209 | RADAR DEVICE - Provided is a radar device capable of preventing mispairing from occurring, and obtaining a distance to a target and a relative velocity to the target even if at least one of the peak frequencies of beat signals cannot be extracted and pairs of the peak frequencies cannot be generated. A target estimation part ( | 04-19-2012 |
| 20120105270 | Observation signal processing apparatus - An observation signal processing apparatus transmits a pulse signal as a search signal, generates an observation value based on a reflected signal against a target and a delay modulation pulse signal, and performs coherent integration on the observation value to output an integration value. The apparatus includes a section for determining a coherent integration count, a section for transmitting pulse signals equivalent to the coherent integration count, a section for calculating a phase correction amount based on an estimated relative speed, and a section for performing phase-weighted coherent integration on observation values for the number of times equivalent to the coherent integration count based on the phase correction amount. | 05-03-2012 |
| 20120146835 | FMCW RADAR SENSOR AND METHOD FOR FREQUENCY MATCHING - In a method for frequency matching in an FMCW radar sensor, a plurality of frequencies, which are derived on various modulation ramps, and which respectively are shown by the radar sensor in a d-v space as geometrical locations, represent possible combinations of a distance d and a speed v of the respective object. In order to identify the objects located on the various modulation ramps, coincidences between the geometrical locations which belong to frequencies derived on various modulation ramps are searched for. The search for coincidences is initially restricted in a first step to a subspace of the d-v space, and in a subsequent step, the search is extended to other regions of the d-v space, while suppressing the frequencies that are associated with the objects found in the first step. | 06-14-2012 |
| 20120200452 | METHOD AND APPARATUS FOR CALCULATING THE DISPLACEMENT AND VELOCITY OF IMPACT-DRIVEN PILES - A method and system are disclosed for calculating a longitudinal displacement and a velocity of the longitudinal displacement of a load bearing pile as the pile is being driven into the ground by blows delivered from a pile driver. A series of signals, such as electromagnetic waves at a frequency above 800 Hz and a wavelength less than 1 mm, are emitted from a signal emitter in a direction toward the pile as the pile is being driven along its longitudinal length into the soil. The series of signals are reflected off of a reflector mounted at a fixed position on the pile and are redirected toward a sensor that is positioned for receiving the reflected series of signals. The reflected series of signals received at said sensor and the preselected frequency at which the series of signals are emitted from said signal emitter are routed to a computing device where the longitudinal displacement of the pile and the velocity of the longitudinal displacement are calculated. | 08-09-2012 |
| 20120235854 | OBJECT DETECTION SYSTEM AND METHOD - The present invention relates to an object detection system and method for determining range and velocity of a target object by transmitting a frequency modulated continuous wave transmission signal and receiving transmission signal reflections of the transmission signal from the target object as a reception signal. Each modulation block of the transmission signal comprises a number of first type chirps, each first type chirp having a first slope, and a number of second type chirps, each second type chirp having a second slope different from the first slope. Two consecutive chirps of the same type have a frequency offset A mixed signal based on the transmission signal and the reception signal and using the first type chirps and the second type chirps is processed, in order to determine the range and velocity of the target object. | 09-20-2012 |
| 20120235855 | ADVANCED LOW POWER PERSONNEL/VEHICLE DETECTING RADAR - Embodiments of the subject invention relate to a method and apparatus for signal processing that reduces the average power used in a small size, frequency modulated continuous-wave (FMCW) radar. Such a small size, frequency modulated continuous-wave (FMCW) radar is referred to herein as a micro radar. Specific embodiments of the invention can be used to detect and/or track personnel, vehicle, and/or other targets. | 09-20-2012 |
| 20120262330 | RADAR APPARATUS - An embodiment of the present invention relates to a radar apparatus, wherein a distance to a target and a velocity of the target are measured by transmitting a digitally modulated transmitting signal using a digital code and receiving and demodulating an echo signal returned due to reflection of the transmitting signal from the target. | 10-18-2012 |
| 20130088380 | RADAR DEVICE - In a radar device, a wide band filter unit suppresses unnecessary components contained in a reception signal subjected to frequency conversion by a frequency conversion unit. The wide band filter unit has frequency characteristics for performing filtering so that isolation between transmitting and receiving becomes a desired level or lower. Although the wide band filter unit has an increased noise power compared to a matched filter, the wide band filter performs the filtering so as not to round a pulse waveform. | 04-11-2013 |
| 20130093614 | OBJECT IDENTIFICATION DEVICE AND METHOD - Provided is an object identification device and a method for the same that are capable of identifying a three-dimensional object and a road surface static object, irrespective of situations. The object identification device identifies an object, based on a transmission signal and a reflection signal caused by the object reflecting the transmission signal. The object identification device includes: a measurement section configured to measure at least one of the relative distance and the relative velocity with respect to the object; an intensity detection section configured to detect the intensity of the reflection signal; and an object identification section configured to identify the object which can be an obstacle object, based on at least one of the relative velocity and the variation in the relative distance, and on the variation in the intensity. | 04-18-2013 |
| 20130127652 | METHOD AND DEVICE FOR CONTINUOUS WAVE RADAR MEASUREMENTS - This invention relates to a method for determining at least one of a distance and a relative velocity by means of continuous wave radar measurements. The method includes generating a measurement signal in the form of a continuous wave radar signal; transmitting the measurement signal by means of an antenna ( | 05-23-2013 |
| 20130214962 | APPARATUS AND METHOD FOR TRAFFIC LANE DETECTION - Two radar devices are installed for adjacent lanes. A memory sequentially stores a received power value at a time when the two radar devices receive the reflected wave from a vehicle at specified time intervals. A calculator calculates, when a vehicle moves in a direction approaching the two radar devices, as a representative value of the received power at a specified time, a weighted average value when weights, which become heavier as an acquisition time of the received power value becomes farther from the specified time, are assigned to a specified number of received power values, whose acquisition time is prior to a specified time, where a priority is given to the received power values whose acquisition time is close to the specified time. A discriminator determines a lane in which the vehicle is traveling according to a result of comparing the sizes of the calculated representative value. | 08-22-2013 |
| 20130222177 | MOVING OBJECT TRACKING APPARATUS, AND MOVING OBJECT TRACKING METHOD - A detection information memory stores, for each object, detection information that includes a distance to and a traveling speed of an object for each predetermined timing detected by a radar apparatus which detects detection information on the object, and the radar apparatus detects the detection information by receiving a reflected wave of an irradiated radar wave from the object. A predictor predicts, for each object, the detection information to be newly detected by the radar apparatus from a history of the detection information. A tracker tracks the object by identifying the object which is the target of the detection information newly detected using a result of the predictor; a determiner determines whether the object is a fixed object or a moving object. An output unit outputs the detection information on the object determined to be the moving object by the determiner. | 08-29-2013 |
| 20140009322 | CALCULATOR, SYSTEM, METHOD AND COMPUTER PROGRAM FOR OBTAINING ONE OR MORE MOTION PARAMETERS OF A TARGET - A calculator for obtaining motion parameters of the target, wherein the calculator is configured to obtain the one or more motion parameters on the basis of at least two time differences. The first time difference describes a timing of passings of a first pair of transmitter-receiver-lines by the target, and the second time difference describes a timing of passings of a second pair of transmitter-receiver-lines by the target, wherein the second pair of the transmitter-receiver-lines is different from the first pair of transmitter-receiver-lines. | 01-09-2014 |
| 20140022111 | DETECTION OF RADAR OBJECTS USING A RADAR SENSOR OF A MOTOR VEHICLE - In a method for detecting radar objects with the aid of a radar sensor of a motor vehicle, a transmitted signal has a sequence of frequency modulations, to each of which a partial signal of a measuring signal is assigned; first information about the relative velocity and the distance of a radar object is ascertained based on a frequency spectrum of at least one of the partial signals; second information about the relative velocity and the distance of the radar object is ascertained based on a frequency spectrum of a time curve of values of frequency spectra of the partial signals at a frequency position of the radar object in these frequency spectra; and the relative velocity and the distance of the radar object are ascertained based on matching of the first information with the second information. | 01-23-2014 |
| 20140049420 | Method for Classifying Moving Vehicles - A method for classifying vehicles in which an angle-resolving radar device yields measurement signals which have frequencies corresponding to a Doppler shift and which originate from measured vehicles and from which radial distances, object angles and radial velocities can be derived. The frequencies of the acquired measurement signals are stored as functions over the measurement time period, and a spectrogram is formed for every vehicle therefrom. Subsequently, the spectrograms are checked for assessment regions with maximum bandwidth of the frequency. These assessment regions are compared with assessment regions of stored spectrograms for different vehicle classes and associated with the most similar such that the measured vehicles are classified. | 02-20-2014 |
| 20150048968 | IN-VEHICLE RADAR APPARATUS AND TARGET DETECTION METHOD THEREOF - In an in-vehicle radar apparatus, a signal processing unit calculates a change curve shape of power values of the reception power of the radio waves received by a receiving unit in relation to the distance from the own vehicle when the speed of the own vehicle acquired by a speedometer is a predetermined value or lower and the distance from the own vehicle to the target measured by a measuring unit is a predetermined value or less, and determines a portion of the change curve shape as a target to be detected. The portion indicates a local maximum value or an inflection value of the power values of which a difference in power with a maximum value is within a certain range, among local maximum values or inflection values of the power values at distances closer to the own vehicle than the maximum value of the power values. | 02-19-2015 |
| 20150084806 | Method and Device for Determining Distance and Radial Velocity of an Object by Means of Radar Signal - The present invention relates to a method for determining distance (R) and radial velocity (v) of an object in relation to a measurement location, in which method radar signals are emitted and after reflection on the object are received again at the measurement location, wherein the emitted radar signals are subdivided within a measuring cycle into numerous segments ( | 03-26-2015 |
| 20150323660 | RADAR SYSTEM AND METHOD FOR DETERMINING RANGE, RELATIVE VELOCITY AND BEARING OF AN OBJECT USING CONTINUOUS-WAVE AND CHIRP SIGNALS - Determining distance and relative speed includes a transmitter transmitting electromagnetic signals defined by a plurality of sections, a first section comprising a continuous-wave (CW) signal, a second section comprising a chirp electromagnetic signal, the chirp electromagnetic signal comprising a plurality of subsections. A detector detects reflected signals being the transmitted electromagnetic signals reflected from an object, and comprising a reflected CW signal and a reflected chirp signal. The detector detects the reflected signals by: (i) generating a plurality of samples of the reflected CW signal, and (ii) generating a plurality of samples of the reflected chirp signal. A processor determines a first set of phase differences among the plurality of samples of the reflected CW signal and a second set of phase differences among the plurality of samples of the reflected chirp signal, and processes the first and second sets of phase differences to determine the distance, relative speed and bearing. | 11-12-2015 |
| 20150362591 | RADAR APPARATUS HAVING TRANSMISSION ANTENNA FOR EMITTING TRANSMISSION SIGNAL FOR DETECTING OBSTACLE - In a radar apparatus having a transmitting antenna that radiates a transmission signal for detecting an obstacle, and a receiving antenna that receives a reflected wave reflected on the obstacle as a reception signal, a beat signal that is a frequency difference between the transmission signal and the reception signal is generated, and presence or absence of the obstacle is detected on the basis of a frequency analysis result of the beat signal. When an obstacle is detected, the relative velocity and the relative distance of the obstacle with respect to the radar apparatus are calculated on the basis of the frequency analysis result of the beat signal, the relative velocity and the relative distance at next measurement of the obstacle with respect to the radar apparatus are estimated, and the transmission signal is controlled so that the beat signal of a large obstacle is eliminated at next measurement on the basis of the estimated relative velocity and relative distance. | 12-17-2015 |
| 20160025839 | POLARIMETRIC RADAR FOR OBJECT CLASSIFICATION AND SUITABLE METHOD AND SUITABLE USE THEREFOR - The present invention relates to a polarimetric radar, consisting of a transmission assembly that emits circularly polarized waves by means of transmission antennas and a receiver assembly that receives the reflected circularly polarized wave components by means of an antenna assembly. A plurality of two-channel receivers are provided as the receiver assembly, which simultaneously receive clockwise-rotating and anti-clockwise-rotating circularly polarized signal components, which are provided for digital beam shaping downstream of the antenna assembly. The invention further relates to a method for object classification. | 01-28-2016 |
| 20160061942 | RANGE RESOLUTION IN FMCW RADARS - The disclosure provides a radar apparatus for estimating a range of an obstacle. The radar apparatus includes a local oscillator that generates a first ramp segment and a second ramp segment. The first ramp segment and the second ramp segment each includes a start frequency, a first frequency and a second frequency. The first frequency of the second ramp segment is equal to or greater than the second frequency of the first ramp segment when a slope of the first ramp segment and a slope of the second ramp segment are equal and positive. The first frequency of the second ramp segment is equal to or less than the second frequency of the first ramp segment when the slope of the first ramp segment and the slope of the second ramp segment are equal and negative. | 03-03-2016 |
| 20160061947 | FMCW DOPPLER PROCESSING ALGORITHM FOR ACHIEVING CW PERFORMANCE - A frequency modulated continuous wave (FMCW) radar system that includes a transceiver coupled to an analog to digital converter (ADC), and a digital signal processor (DSP) coupled to the ADC. The transceiver is configured to transmit a plurality of FMCW chirps, receive a plurality of reflected FMCW chirps, and mix the reflected FMCW chirps with at least one of the FMCW chirps to generate a plurality of beat signals. The reflected FMCW chirps are the FMCW chirps after being reflected off of a target object. The ADC is configured to convert the beat signals into a plurality of digital chirps. The DSP is configured to receive the digital chirps and quantify a relative velocity of the target object as compared to a velocity of the FMCW radar system by removing an effect of a range to the target object from a two dimensional range Doppler processing signal. | 03-03-2016 |
| 20160124085 | Method for Determining the Distance and Relative Speed of a Remote Object - The invention relates to a method for determining the distance (R) and relative speed (v) of at least one object remote from an observation point, comprising the following method steps: continuous transmission of at least one first and one second electromagnetic signal in each case of a signal period (T | 05-05-2016 |
| 20160139257 | FMCW RADAR DEVICE AND FMCW RADAR SIGNAL PROCESSING METHOD - The FMCW radar device includes: a range observation period setting section configured to set a plurality of range observation periods; a modulated frequency width setting section configured to set, for the respective plurality of range observation periods, a plurality of modulated frequency widths; a beat signal generation section configured to generate, for the respective plurality of range observation periods, beat signals based on the transmission signal and the reception signal; and a pass bandwidth setting section configured to set pass bandwidths of the beat signals generated by the beat signal generation section, in which the modulated frequency width setting section sets, for the respective plurality of range observation periods, the plurality of modulated frequency widths so that a difference among maximum frequencies of the beat signals generated for the respective plurality of range observation periods becomes zero or falls within a predetermined range. | 05-19-2016 |
| 20220137202 | SYSTEMS AND METHODS FOR RANGE-RATE DEALIASING USING POSITION CONSISTENCY - Systems and methods for operating radar systems. The methods comprise, by a processor: receiving point cloud information generated by at least one radar device and a spatial description for an object; generating a plurality of point cloud segments by grouping data points of the point cloud information based on the spatial description; arranging the point cloud segments in a temporal order to define a radar tentative track; performing dealiasing operations using the radar tentative track to generate tracker initialization information; and using the tracker initialization information to generate a track for the object. | 05-05-2022 |
| 342110000 | With plural fixed range gates | 3 |
| 20090284407 | PULSE DOPPLER RADAR DEVICE - A judging and controlling part | 11-19-2009 |
| 20150061918 | Microwave Sensor Having Function of Range Gates - A microwave sensor is disclosed. The microwave sensor includes an active antenna module, a first low pass filter, a second demodulator, a modulation module, and a discrimination control module. The active antenna module is utilized for transmitting a first FMCW signal towards a target and receiving a second FMCW signal reflected back from the target according to a sweep period. The active antenna module includes a loop antenna and a radio frequency transistor. The first low pass filter and the radio frequency transistor form a first demodulator. The first demodulator and the second demodulator perform two-stage down converting and demodulating to extract information for calculating range and velocity, respectively. The present invention adjusts a radio frequency bandwidth of the FMCW signal by first adjusting an amplitude of a modulation signal generated by the modulation module to control various detection ranges. | 03-05-2015 |
| 20150070205 | Lighting Device with Microwave Detection Function - A lighting device includes a microwave sensor for adjusting its sensing range based on a range gate selected from multiple range gates. An active antenna module transmits first FMCW signal toward a target based on the selected range gate and for receiving second FMCW signal reflected from the target. The microwave sensor demodulates the first FMCW signal and the second FMCW signal to generate beat frequency signal. Then another demodulator demodulates the beat frequency signal to generate Doppler signal. The microwave sensor calculates a range between the microwave sensor and the target based on the beat frequency signal, calculates velocity of the target according to frequency of the Doppler signal, and determine whether to generate triggering signal according to the calculated velocity and the calculated range, when the object located within the range gate. The power module enables a lamp based on the triggering signal. | 03-12-2015 |
| 342112000 | With plural frequencies transmission | 6 |
| 20090278727 | Rader system - A radar system utilizing a CW radar system, including an FMCW radar, is capable of avoiding interference wave generation and of simultaneously covering a number of radar systems within limited frequency modulation bands. The radar system | 11-12-2009 |
| 20100127915 | METHOD AND APPARATUS FOR RADAR SIGNAL PROCESSING - A radar apparatus and method for determining the range to and velocity of at least one object comprising, transmitting a plurality of RF signals, each comprising a particular frequency and being transmitted during a particular unique finite period, the plurality of signals collectively comprising at least one first subset of signals having the same frequency and at least one second subset of signals having different frequencies, receiving the plurality of signals after reflection from an object, determining a phase difference between each of the signals and the corresponding reflected signal, each piece of phase difference information herein termed a sample, organizing the samples in two-dimensions wherein, in a first dimension, all samples have the same frequency and, in a second dimension, all consecutive samples are separated from each other by a fixed time interval; processing the samples in the first dimension to determine a phase rotation frequency corresponding to the samples in the first dimension, the phase rotation frequency comprising a Doppler frequency for the at least one object, processing the samples in the second dimension to determine a second phase rotation frequency corresponding to the samples in the second dimension; the phase rotation frequency comprising Doppler frequency and range frequency for the at least one object; comparing the first phase rotation frequency to the second phase rotation frequency to distinguish range frequency from Doppler frequency of the at least one object; and converting the Doppler frequency to a velocity of the object and converting the range frequency to a range of the object. | 05-27-2010 |
| 20120013499 | Circuit Board, High Frequency Module, and Radar Apparatus - A circuit board is provided. The circuit board includes a substrate, a waveguide line and a laminated waveguide. The waveguide line is at least partially positioned on a first surface of the substrate. The waveguide line transmits a high frequency signal. The laminated waveguide is formed inside the substrate. The laminated waveguide is electromagnetically coupled to the waveguide line, and has a lead-out portion led out from inside the substrate to a surface other than the first surface. The laminated waveguide includes a dielectric layer, a pair of main conductive layers and a through conductor group. The pair of main conductive layers sandwiches the dielectric layer in a thickness direction thereof. In the through conductor group, a plurality of through conductors are arranged along a high frequency signal transmitting direction. The plurality of through conductors electrically connect the pair of main conductive layers. | 01-19-2012 |
| 20140253365 | METHOD FOR CYCLICALLY MEASURING DISTANCES AND VELOCITIES OF OBJECTS USING AN FMCW RADAR SENSOR - In a method for cyclically measuring distances (d) and relative velocities (v) of objects using an FMCW radar sensor, the frequency (f) of a transmitted signal of the radar sensor is periodically modulated, each period (P) including at least two differing modulation patterns, a relationship between distance (d) and velocity (v) of the object being derived from a signal received for a single modulation pattern, and the signals received for multiple modulation patterns being adjusted to one another in order to determine one value each for the distance and the velocity per each measuring cycle. For the adjustment between a signal obtained for a modulation pattern in the instantaneous measuring cycle and the signal(s) obtained for other modulation patterns, the signals from at least one previous measuring cycle are utilized. | 09-11-2014 |
| 20150084807 | APPARATUS FOR DETECTING CREEPING OF RADAR WAVES - An apparatus that detects creeping of radar waves includes: a transmitter transmitting radar waves; a receiver receiving incoming waves from a target; a distance detecting unit detecting a first distance which is a distance up to the target; a speed derivation unit deriving a relative speed relative to the target; a distance estimating unit estimating, based on the relative speed, a second distance which is a distance up to the target; and a creeping detecting unit determining whether or not a creeping has occurred in accordance with whether or not the differential distance representing a deviation quantity between the first distance and the second distance is larger than or equal to a predetermined threshold. | 03-26-2015 |
| 20150331096 | RAPID-CHIRPS-FMCW RADAR - Method for determining distances and relative velocities of simultaneously located objects using an FMCW radar, in which the frequency of a transmission signal is modulated in the form of periodically recurring ramps, the transmission signal is mixed with a received signal to form an intermediate frequency signal and, for determining the distance and/or the relative velocity of the objects, the change in the phase of the intermediate frequency signal is evaluated from one ramp to the next characterized in that the modulation pattern includes at least two ramps, which differ only by a fixed frequency offset and follow one another in a certain time interval, and an unambiguous approximate value is calculated for the object distance on the basis of the phase difference φ | 11-19-2015 |
