Class / Patent application number | Description | Number of patent applications / Date published |
342059000 | PLURAL RADAR | 39 |
20080231496 | Method for determining noise floor level and radar using the same - A method for a radar for detecting a noise floor level of an electric signal corresponding to an incident radio wave received by the radar, the incident radio wave including a return of a radar wave that is transmitted from the radar toward a measuring range of the radar to detect target object characteristic including presence of a target object within the measuring range of the radar, a distance between the target object and the radar, and a relative speed of the target object to the radar is provided. The method includes steps of: calculating a histogram of intensities of frequency components, the frequency components exceeding a predetermined value relating to the measuring range, and extracting an intensity having the maximum height in the histogram as the noise floor level of the electric signal. | 09-25-2008 |
20080284638 | RADAR DEVICE AND METHOD FOR ADJUSTING AMONG RADAR SITES - A radar device includes a generation unit, a transmission unit, and a control unit. The generation unit selectively generates a set of a plurality of transmission signals whose center frequencies are different from one another within an assigned frequency band. The transmission unit emits the transmission signals. The control unit controls the generation unit so as to vary the center frequencies for each emission of the transmission signals. | 11-20-2008 |
20080291077 | APPARATUS AND METHOD FOR RADAR IMAGING BY MEASURING SPATIAL FREQUENCY COMPONENTS - A radar imaging system is provided that directly measures the spatial frequency components of a scene via digital-beam-forming techniques applied along the cross-track dimension. Separate transmit and receive antennas provide increased integration time for the receive function, thus improving the signal-to-noise ratio. A segmented receive antenna is employed and processed as a series of interferometers sensitive to spatial frequency components of the scene corresponding to the separation between pairs of antenna elements. Range gating is used in the along-track dimension to divide the return from an illuminated swath into multiple range bins that may be processed independently. The system provides an improved signal-to-noise ratio and lends significant flexibility to the image formation process, improving the quality of the radar imaging. An embodiment having multiple transmit antennas is also provided that enables the generation of three-dimensional stereoscopic radar images. | 11-27-2008 |
20090040094 | OBJECT DETECTING APPARATUS - An object detecting apparatus for detecting an object by a plurality of radars, with improved accuracy of identity determination and acquisition of position information in fusion of detection results. The object detecting apparatus is arranged to obtain a moving path of a detected point by a radar and to perform pairing as follows: if a detected point by a radar exists in a region based on the moving path and if a relative velocity thereof is matched with that of the detected point of interest, the detected point is paired as a corresponding detected point. | 02-12-2009 |
20100013697 | METHOD OF AND DEVICE FOR TRACKING AN OBJECT - A method of tracking an object including the steps of: collecting N measurements of range R | 01-21-2010 |
20100079330 | Networked waveform system - Certain embodiments provide a network waveform system that can include multiple radars disposed at different geographical positions within an environment. The multiple radars may be configured to transmit a network waveform. The network waveform may include multiple radar waveforms. Each radar waveform of the multiple waveforms may be transmitted by a specific radar of the multiple radars. The system can also include a computer system coupled with the multiple radars that can include a processor and a memory. The memory may be configured to store information including data received from the multiple radars, data processed by the processor, and processing code executable by the processor. The processing code may include instructions to receive output data from the multiple radars resulting from the transmitted network waveform instructions to jointly process the output data from the multiple radars to determine a measurement of the environment based on the network waveform. | 04-01-2010 |
20100103023 | RADAR SYSTEM - A radar system includes radars and a controller. The controller controls waveform patterns of the radars. As a signal processing unit of each of the radars receives an instruction from the controller, the signal processing unit selects a frequency modulation pattern of a VCO between an FM-CW mode and a CW mode stored in a waveform memory to perform mode switching, and then outputs a radio wave from a transmission antenna. Then, the controller instructs each signal processing unit for a frequency modulation pattern of each radar or an output timing of each pattern so that a time, at which continuous wave signals output from the radars have the same frequency, is not continuous. | 04-29-2010 |
20110050483 | SYSTEM TO PREVENT TWO ROTATING ANTENNAS FROM ILLUMINATING EACH OTHER - An apparatus or a method for preventing radio-frequency (RF) interferences between rotating antennas. For example, the invention is particularly applicable to radar and communication systems on board naval ships. | 03-03-2011 |
20110260908 | METHOD FOR MITIGATING THE EFFECTS OF CLUTTER AND INTERFERENCE ON A RADAR SYSTEM - A method for mitigating against a clutter source or other interferer in a high precision radar is disclosed. The clutter source or interferer may be a wind farm. The method includes positioning a plurality of relatively low resolution radars, such as low cost marine navigation radars, in or about the interferer, and fusing data from them together, to produce object positional data of increased accuracy. One or more of the radars may be adapted to have a radiation beam pattern directed more towards the vertical, and such adapted radars may advantageously be located more centrally within the interfering region. Data from the individual radars may be fused in any suitable manner, and other information, such as ADS-B broadcasts may be included. Data relating to aircraft may be supplied to operators to supplement air traffic control, and air defence radars, and data relating to shipping around sea based wind farms supplied to vessel traffic system radar operators. | 10-27-2011 |
20120013498 | EXPANDABLE AND RECONFIGURABLE INSTRUMENT NODE ARRAYS - An expandable and reconfigurable instrument node includes a feature detection means and a data processing portion in communication with the feature detection means, the data processing portion configured and disposed to process feature information. The instrument node further includes a phase locked loop (PLL) oscillator in communication with the data processing portion, the PLL oscillator configured and disposed to provide PLL information to the processing portion. The instrument node further includes a single tone transceiver and a pulse transceiver in communication with the PLL oscillator, the single tone transceiver configured and disposed to transmit or receive a single tone for phase correction of the PLL oscillator and the pulse transceiver configured and disposed to transmit and receive signals for phase correction of the PLL oscillator. The instrument node further includes a global positioning (GPA) receiver in communication with the processing portion, the GPS receiver configured and disposed to establish a global position of the instrument node. | 01-19-2012 |
20120032833 | RADAR COHERENT PROCESSING INTERVAL SCHEDULING VIA AD HOC NETWORK - Techniques disclosed herein include systems and methods for accurately scheduling radar and radio events against each other. Specifically, a scheduling manager can schedule radar events based on scheduled radio events (wireless network communication events). A given radio schedule for a compact radar sensor can be a relatively complicated schedule, especially when the compact radar sensor operates as part of an ad hoc network. In certain embodiments, the scheduling manager identifies a radio transmission schedule of neighboring radar nodes or compact radar sensor units. Such a radio transmission schedule of neighboring nodes can include information on when neighboring nodes will be receiving or transmitting data. The scheduling manager then schedules radar events to be executed by the radar device at available times, or at times that do not overlap with scheduled radio events. | 02-09-2012 |
20120133546 | COMBINING DATA FROM MULTIPLE RADAR SIGNALS ON A SINGLE PLAN POSITION INDICATOR (PPI) DISPLAY - In certain embodiments, a method for combining data from multiple radar signals on a single PPI includes receiving, from a first radar device having a first angular range of visibility, first radar signal data corresponding to the first angular range of visibility. The method further includes receiving, from a second radar device having a second angular range of visibility, second radar signal data corresponding to the second angular range of visibility. The method further includes performing compensation processing on at least a portion of the second radar signal data to form modified second radar signal data that is correlated to the first radar signal data. The method further includes combining at least a portion the first radar signal data with at least a portion of the modified second radar signal data to form combined radar signal data and generating, based on the combined radar signal data, a display on a radar PPI display. | 05-31-2012 |
20120200448 | RADAR NETWORK COMMUNICATION THROUGH SENSING OF FREQUENCY HOPPING - In one embodiment, a radar communication system includes a plurality of radars having a communication range and being capable of operating at a sensing frequency and a reporting frequency, wherein the reporting frequency is different than the sensing frequency, each radar is adapted for operating at the sensing frequency until an event is detected, each radar in the plurality of radars has an identification/location frequency for reporting information different from the sensing frequency, a first radar of the radars which senses the event sends a reporting frequency corresponding to its identification/location frequency when the event is detected, and all other radars in the plurality of radars switch their reporting frequencies to match the, reporting frequency of the first radar upon detecting the reporting frequency switch of a radar within the communication range. In another embodiment, a method is presented for communicating information in a radar system. | 08-09-2012 |
20120313807 | DEVICE AND METHOD FOR CONTROLLING TRACKING INFORMATION, AND RADAR DEVICE - This disclosure provides a tracking information control device. The device includes a receiver for receiving, from two radar devices, data relating to a target echo received by a radar antenna of one of the radar devices, and data relating to a target echo received by a radar antenna of the other radar device, the data being obtained from tracking the target echoes, respectively, a determiner for determining whether the target echoes indicate the same target object, an ID applier for applying the same ID to the target echoes when the determiner determines that the target echoes indicate the same target object, and a transmitter for transmitting the same IDs to the radar devices in order to inform whether the target echoes displayed by the radar devices, respectively, indicate the same target object. | 12-13-2012 |
20140062759 | OBJECT DETECTION APPARATUS AND METHOD - An object detection apparatus includes: a first radar configured to measure first positional information regarding a first object existing in a first scan range; a second radar configured to measure second positional information regarding a second object existing in a second scan range on the basis of second reflected wave of second wave radiated onto the second scan range including the first region and a second region, the second wave being radiated in such a way as to scan the first region in a direction opposite a direction in which the first radar radiates the first wave; and a processor configured to detect a third object existing in the first region on the basis of the first positional information and the second positional information. | 03-06-2014 |
20140118183 | THREE DIMENSIONAL RADAR SYSTEM USING USUAL RADARS INSTALLED IN SEA FACILITIES - There is provided a three-dimensional radar system by using the combination of commercialized usual radars for vessels at relatively low price so as to enable to strengthen the surveillance capability about aircrafts flying at low altitude and strengthen the surveillance capability on the sea and in the air to protect important facilities of a port with more developed than the conventional surveillance system of monitoring only ships or vessels in a port while overcoming the operational limitation of VTS (Vessel Traffic Service). | 05-01-2014 |
20140191895 | RADAR SYSTEM FOR MOTOR VEHICLES, AND MOTOR VEHICLE HAVING A RADAR SYSTEM - A radar system for motor vehicles has at least two radar sensors for emitting and receiving radar radiation for monitoring the surroundings of the motor vehicle, the at least two radar sensors being each positioned at an angle between 40 degrees and 50 degrees to an axis, and the at least two radar sensors being configured in such a way that the respective antenna has a pivotable visual range of an angle between at least −60 degrees and +60 degrees, in particular between −45 degrees and +45 degrees, relative to the main emission direction of the respective radar sensor. | 07-10-2014 |
20140232586 | Method and Device for Radar Applications - A device for radar applications includes a computing engine, a radar acquisition unit connected to the computing engine, a timer unit connected to the computing engine, a cascade input port, and a cascade output port. The cascade input port is configured to convey an input signal to the computing engine and the cascade output port is configured to convey an output signal from the computing engine. Further, an according system, a radar system, a vehicle with such radar system and a method are provided. | 08-21-2014 |
20140232587 | FRONT STRUCTURE AND REAR STRUCTURE OF VEHICLE - In order to provide a front structure, of a vehicle, which prevents reduction in efficiency in cooling an auxiliary component, by using intake air, and suppresses damage to the auxiliary component, which are caused by a millimeter-wave radar in the event of collision, a front structure of the vehicle includes a front right side radar for transmitting and receiving a radio wave to detect obstacles to a front right side of the vehicle, a front left side radar for transmitting and receiving a radio wave to detect obstacles to a front left side of the vehicle, a bumper reinforcement, crash boxes at the left and the right, and a condenser which is cooled by intake air. The front right side radar is arranged to a side farther out than a right end of the condenser, and the front left side radar is arranged to a side farther out than a right end of the condenser. | 08-21-2014 |
20140266856 | SYSTEM AND METHOD FOR FILLING GAPS IN RADAR COVERAGE - A method of positioning a plurality of radar units in a defined area amongst one or more legacy radar units that provide legacy radar coverage in the defined area is disclosed. The steps of identifying a location of each legacy radar unit, setting a threshold altitude, and determining a legacy occultation of each legacy radar unit from a landscape level up to the threshold altitude are also disclosed. Mapping the legacy occultation of the legacy radar units to provide a three dimensional occultation map in the defined area and locating gaps below the threshold altitude in the legacy radar coverage as a function of the occultation map are also disclosed. Identifying a plurality of sites as a function of the gaps where the sites are accessible to receive a radar unit is also disclosed. Determining an anticipated radar coverage of a radar unit positioned at each of the sites and determining a reduction in the gaps as a function of the anticipated radar coverage are also disclosed. Selecting sites as a function of the reduced gaps is also disclosed. X band, C band or S band radar units can be positioned at the selected sites. The threshold altitude can be 10,000 or 15,000 feet. Affected populations and costs can also be considered in radar placement. | 09-18-2014 |
20140333469 | APPARATUS AND METHOD FOR DETERMINING A VEHICLE FEATURE - Techniques are disclosed for determining characteristic feature(s) of a vehicle travelling on a roadway, comprising: a detector, which is directed towards the roadway and is configured to measure the movement vector of the vehicle at a current location and time, a tracking unit, connected to the detector, for calculating a target location of the vehicle at a target time on the basis of current location and time and movement vector, a first radar sensor, connected to the detector, for transmitting a radar beam directed towards the current location, receiving a reflected radar beam, and determining a frequency spectrum thereof, a second radar sensor, connected to the tracking unit, for transmitting a radar beam directed towards the target location at the target time, receiving a reflected radar beam and determining a frequency spectrum thereof, and an evaluation unit for generating characteristic feature(s) of the vehicle from the determined frequency spectra. | 11-13-2014 |
20150048967 | RADAR SYSTEM - Respective sector radars generate first and second transmission signals by multiplying any one Spano code sequence and any one orthogonal code sequence, selected among 2 | 02-19-2015 |
20150102954 | 4-DIMENSIONAL CONTINUOUS WAVE RADAR SYSTEM FOR TRAFFIC SAFETY ENFORCEMENT - A radar system for detecting a single object from a plurality of objects and calculating 4D information of said object may include a first radar for obtaining first positional information of a first object, a second radar for obtaining second positional information of a second object and a computer for comparing the first positional information with the second positional information to determine if the first object is the same as the second object and combining the matched first positional and second positional information into 4D information. | 04-16-2015 |
20150309161 | METHOD AND SYSTEM FOR THE REMOTE MONITORING OF THE TWO/THREE-DIMENSIONAL FIELD OF DISPLACEMENTS AND VIBRATIONS OF OBJECTS/STRUCTURES - A method and system are described, for the remote monitoring of the two/three-dimensional field of displacements and vibrations of an object/structure. The method comprises the following steps: transmission of a plurality of radar waves by a plurality of corresponding radar devices positioned at a predefined distance from a plurality of corresponding receiver or target devices applied on the object/structure; obtaining a first distance value between each radar device and the corresponding receiver or target device, wherein the first distance value is affected by an error consisting of the sum between the electromagnetic propagation disturbance in the atmosphere of the radar waves and the reciprocal interference between the single receiver or target devices and one or more fixed reflectors positioned in the proximity of said receiver or target devices; obtaining, simultaneously with respect to the first distance value, a second distance value between each radar device and a plurality of corresponding calibration devices positioned at predefined distances from said radar devices, wherein the second distance value is affected by an error consisting only of the electromagnetic propagation disturbance in the atmosphere of the radar waves; estimating and removing the error consisting of the electromagnetic propagation disturbance in the atmosphere of the radar waves to obtain the second corrected distance value; estimating and removing the error consisting of the reciprocal interference between the single receiver or target devices and one or more fixed reflectors positioned in the proximity of said receiver or target devices, to obtain the first corrected distance value, which defines the entity of the spatial displacement of the object. | 10-29-2015 |
20160025849 | METHODS AND APPARATUS FOR 3D RADAR DATA FROM 2D PRIMARY SURVEILLANCE RADAR AND PASSIVE ADJUNCT RADAR - Methods and apparatus for combining radar signals of a two-dimensional primary radar covering a surveillance area and a passive adjunct radar to provide three-dimensional data for targets and weather. In exemplary embodiments, high beam and low beam data from the primary radar and elevation data from the adjunct radar can be used to mitigate interference from clutter, such as wind farms. | 01-28-2016 |
20160025852 | ROTARY ANTENNA, SCANNER USING SUCH AN ANTENNA, AND DEVICE FOR INSPECTING PERSONS - The antenna comprises at least one waveguide of rectangular section and a cylinder having an opening along a helical line, the cylinder having a relative rotational movement in relation to the waveguide placed inside the cylinder, the waveguide being open facing the inner face of the cylinder which forms a microwave short-circuit to close the guide, wherein two cavities are produced on each side of the guide, parallel thereto, over its entire length, the openings of the cavities being substantially in the plane of the opening of the guide. The invention applies, for example, to the detection of hidden objects carried by persons, in particular dangerous objects. | 01-28-2016 |
20160047892 | FMCW RADAR WITH PHASE ENCODED DATA CHANNEL - Methods and devices are disclosed of using a Frequency-Modulated-Continuous-Wave (FMCW) radar unit for data communication by receiving a signal with a phase encoded data channel, and processing the signal with the phase encoded data channel to simultaneously determine data and timing information. | 02-18-2016 |
20160047907 | Modular Planar Multi-Sector 90 Degrees FOV Radar Antenna Architecture - In one aspect, the present application describes an apparatus for a radar system. The apparatus may include a vehicle with four radar units mounted on it. Each radar unit may be configured with a half-power scanning beamwidth and a respective broadside direction. The half-power scanning beamwidth of each radar unit may be configured to scan approximately 90 degrees. A first radar unit may have a broadside direction that is approximately 90 degrees from respective broadside directions of a second radar unit and a fourth radar unit. The second radar unit may have a broadside direction that is approximately 90 degrees from respective broadside directions of the first radar unit and a third radar unit. The third radar unit has a broadside direction that is approximately 90 degrees from respective broadside directions of the second radar unit and the fourth radar unit. | 02-18-2016 |
20160069992 | NEGATIVE PSEUDO-RANGE PROCESSING WITH MULTI-STATIC FMCW RADARS - A multi-static radar system for monitoring water surface targets is provided. The multi-static radar system may include a first and second radar, a state machine, and a signal processor. The radars may be located in separate locations and synchronized using timing signals. The state machine may be configured to determine, using the timing signals, start times and end times of radio frequency signal modulations for each radar. A concept of negative pseudo-range is provided, whereby the modulation start times are configured to allow pseudo-negative time delays at as many as half of the radar receivers, thereby doubling the multi-static echo detections. The signal processor may be configured to simultaneously receive and process the echoes of the radar signals received at the radars to determine position and velocity vectors for the monitored water surface targets. | 03-10-2016 |
20160103214 | Use of Range-Rate Measurements in a Fusion Tracking System via Projections - A target is located and a track is associated with the target in the fusion coordinate system. An estimate/prediction of the target's velocity is developed within the tracker, as well as {right arrow over (T)}, a vector representing the distance from the fusion center to the target as estimated by the tracker, and {right arrow over (S)}, a vector representing the known distance from the fusion center to the sensor. The sensor's range vector, {right arrow over (R)} (the distance from the sensor to the target as predicted by the tracker) is transformed to fusion coordinates. Using the sensor's range vector, normalized to unit length, in fusion coordinates and the estimated target's velocity, an estimate of the target's speed projected in the direction of {right arrow over (R)} is derived. The estimated range-rate is compared per update to the sensor's measured range-rate in the form of an error measurement. The error is then used to correct the track's velocity prediction. | 04-14-2016 |
20160109568 | Radar System - A radar system includes a plurality of radar devices each having a transmitting unit that transmits a high frequency signal to an object, a receiving unit that receives a signal reflected from the object, an individual control unit that controls transmission and reception timings, and a converting unit that converts an output of the receiving unit into digital data, and a central processing device having an integration process unit that processes information transmitted from the radar devices in association with positional information of the radar devices, a command control unit that controls operation timings of the individual control units, and a detection process unit that performs a process for detecting the object on the digital data before being processed by the integration process unit. Digital communication isolated from the transmission and reception timing controls at the individual control unit is performed between the radar devices and the central processing device. | 04-21-2016 |
20160116583 | OBJECT DETECTION APPARATUS - An object detection apparatus for detecting an object around a moving object carrying the apparatus by transmitting a probe wave and receiving reflections of the probe wave from the object via a plurality of ranging sensors attached to the moving object. In the apparatus, a position determiner determines whether or not a position of the object calculated by a position calculator based on the reflections received by a pair of adjacent ranging sensors, from one of which is the probe wave is transmitted, is out of an overlapping range of ranges of object detection for the respective adjacent ranging sensors. A position invalidator is configured to, based on the determination made by the position determiner, determine that the object position calculated by the position calculator is invalid. | 04-28-2016 |
20160146931 | TECHNIQUES FOR HIGH ARRIVAL ANGLE RESOLUTION USING MULTIPLE NANO-RADARS - A device includes a circuit board having thereon, a controlling component, a first radar chip and a second radar chip. The first radar chip includes a first radar transmission antenna, a second radar transmission antenna and a first radar receiver antenna array. The second radar chip includes a second radar receiver antenna array. The controlling component can control the first radar chip and the second radar chip. The first radar transmission antenna can transmit a first radar transmission signal. The second radar transmission antenna can transmit a second radar transmission signal. The second radar chip is spaced from the first radar chip so as to create a virtual receiver antenna array between the first radar receiver antenna array and the second radar receiver antenna array. | 05-26-2016 |
20160154102 | SYSTEMS AND METHODS FOR USING TIME OF FLIGHT MEASUREMENTS FOR IMAGING TARGET OBJECTS | 06-02-2016 |
20160161605 | RADAR VEHICLE TRACKING - Radar vehicle tracking is described. One or more embodiments include a device to receive a first determined distance between a first radar transceiver and a vehicle, the first distance determined by the first radar transceiver operating in a first mode, receive a second determined distance between a second radar transceiver and the vehicle, the second distance determined by the second radar transceiver operating in the first mode, receive a first determined distance ellipse between the first radar transceiver and the vehicle, the first distance ellipse determined by the first radar transceiver operating in a second mode, receive a second determined distance ellipse between the second radar transceiver and the vehicle, the second distance ellipse determined by the second radar transceiver operating in the second mode, and determine at least one location estimate of the vehicle based on the first and second determined distances and first and second determined distance ellipses. | 06-09-2016 |
20160187466 | RADAR ALIGNMENT APPARATUS AND METHOD OF CONTROLLING THE SAME - A method of controlling a radar alignment apparatus includes calculating a first target information by using a first radar and a second target information by using a second radar spaced apart from the first radar on a vehicle by a predetermined interval. The method includes determining whether the first target and the second target are a same target based on comparing at least some of the first target information with the second target, and determining whether misalignment exists in at least one of the first radar and the second radar based on a comparison of a first angle included a first target information with a second angle included in a second target information, correcting the misalignment by using the first target information and the second target information when it is determined that the misalignment exists in at least one of the first radar and the second radar. | 06-30-2016 |
20160187479 | RADAR SYSTEM INCLUDING FIRST RADAR DEVICE AND SECOND RADAR DEVICE - A radar system includes: control circuitry that generates a beam control signal; a first radar device including a first transmission antenna and first beam formation circuitry that causes the first transmission antenna to perform a first scan including a second scan from left to right by changing an emission angle and a third scan from right to left by changing an emission angle in such a manner that a part of the second scan and a part of the third scan are performed alternately one after another; and a second radar device including a second transmission antenna and second beam formation circuitry that cause the second transmission antenna to perform a fourth scan in such a manner that a phase of the fourth scan is opposite to a phase of the first scan. | 06-30-2016 |
20160202354 | METHODS AND APPARATUS FOR PROVIDING A DYNAMIC TARGET IMPACT POINT SWEETENER | 07-14-2016 |
20180024235 | SYSTEMS AND METHODS FOR 4-DIMENSIONAL RADAR TRACKING | 01-25-2018 |