| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 342195000 | Digital processing | 61 |
| 20080204308 | Radar Sensor - A radar sensor having a transceiver device ( | 08-28-2008 |
| 20080204309 | Radar System - A radar system comprises a transmitter that transmits a predetermined wideband signal, a digital receiver that records a returned signal using a one-bit ADC, a random noise source that is added to the transmitted or returned signal, a processing means where the received signal is distorted to compensate for the effect of the noise on the receiver. The predetermined wideband signal may be a pseudo random noise signal. The processing may include averaging prior to cross-correlation. | 08-28-2008 |
| 20080204310 | METHODS AND SYSTEMS FOR FREQUENCY INDEPENDENT BEARING DETECTION - A system and method are provided for estimating bearing of a target based on RF signals received by an array of antenna elements. The system comprises first and second input channels that are configured to receive analog signals that correspond to first and second antenna elements. The system also includes an analog to digital converter module for converting each of the analog signals to digital data samples and outputting separate streams of digital data samples corresponding to each of the first and second antenna elements as first and second data streams. An in-phase and quadrature detector module includes a phase shift module for shifting each of the first and second data streams by a predetermined amount of time to form first and second phase shifted data streams. A surveillance module determines a bearing of the target based on in-phase and quadrature data. | 08-28-2008 |
| 20080231501 | Radar Apparatus - Disclosed is a DBF radar apparatus comprising: an antenna for radiating a transmit signal; a plurality of antennas for receiving the transmit signal reflected from an object; a first selector switch section for sequentially selecting output terminals of the plurality of antennas one at a time for connection to an input terminal by performing switching with a first period; a first downconverting section for downconverting, by using a portion of the transmit signal, a received signal input from each antenna; a low-frequency cut-off filter connected to an output of the first downconverting section; a second selector switch section for connecting an output of the low-frequency cut-off filter to a sequentially selected one of a plurality of A/D converters; and a digital signal processing section for receiving outputs of the plurality of A/D converters, and for applying prescribed processing to the outputs to detect the distance to the object or the relative velocity with respect to the object, wherein, when each antenna is connected to the input terminal, the first selector switch performs on-off control with a second period shorter than the first period. | 09-25-2008 |
| 20080297404 | COMMUNICATION DEVICE WITH FRONT-END RADIO FREQUENCY ANTENNA MODULE - A radio frequency communication front-end device having a front-end radio frequency antenna module comprises a microchip antenna and a radio frequency front-end signal processing core chip, wherein the microchip antenna is used to emit and receive electromagnetic waves for signal communication with other wireless equipment. The present invention, as being in the form of a module, processes the radio frequency signals by means of the radio frequency front-end signal processing core chip and, therefore, achieves optimized efficiency of electromagnetic wave emission and reception. | 12-04-2008 |
| 20080316090 | DSSS radar, method implemented by radar and computer-readable storage medium - A DSSS (Direct Sequence Spectrum Spreading) radar has a transmitting part to transmit a transmitting signal, including a predetermined code sequence, to one or a plurality of targets, a receiving part to receive a received signal corresponding to the transmitting signal which has been reflected from the one or a plurality of targets, and a computing part. The computing part computes a sum signal and a difference signal of received signals received by the receiving part at different points in time, and obtains a Doppler frequency of the one or a plurality of targets based on a phase difference between the sum signal and the difference signal. | 12-25-2008 |
| 20090021422 | Device and method for estimating the number of arrival signals - A largest eigenvalue is determined among eigenvalues corresponding to a correlation matrix indicating correlations between a plurality of channels receiving incoming radar waves from an object that reflects a radar wave as a reference eigenvalue λ | 01-22-2009 |
| 20090046004 | PROCESSING VIRTUAL AND LIVE TRACKS TO FORM A VIRTUAL-OVER-LIVE ENVIRONMENT - In one aspect, a method includes receiving live radar data, receiving virtual radar data, merging the live radar data and the virtual radar data to form merged data, and tagging the merged data with a virtual tag indicator to indicate a presence of the virtual radar data. The method also includes for each receive time window, determining if the virtual radar data is present from the virtual tag indicator; if the virtual radar data is present, tagging a detection with a virtual tag and if the virtual radar data is not present, tagging detections with a live tag. | 02-19-2009 |
| 20090121925 | Energy Emission Event Detection - Methods and systems for detecting an energy emission event are provided. In a method for detecting an energy emission event, a reference event signal is compared with a received event signal. In some embodiments, the reference event signal is associated with radiated energy having a predetermined temporal response. A detection signal is output when the received event signal corresponds to the reference event signal. In response to outputting the detection signal, imagery of a location in proximity to where the received event signal originated is captured or processed. Using the captured imagery and the detection signal, a determination of where the received event signal originated is made. | 05-14-2009 |
| 20090135052 | Robust pulse deinterleaving - Systems and methods are presented for associating time slices of a received signal with previously encountered time slices. A parameter determination component determines at least one parameter for each received time slice. A content addressable memory stores a plurality of parameter values associated with the previously encountered time slices. The content addressable memory is searchable such that the determined at least one parameter for each received time slice can be compared to the stored plurality of parameter values to provide a memory output. An emitter matching component associates a given received time slice with one of a plurality of emitters according to the memory output. | 05-28-2009 |
| 20090135053 | CODE GENERATION APPARATUS - The code generation apparatus includes: a clock generation unit ( | 05-28-2009 |
| 20090167594 | Signal Processor and Signal Processing Method - Radiolocalization receiver for a satellite radiolocalization system like GPs, Galileo or the like, including a staged correlation and accumulation unit, in which the correlation data is biased in order lo be to always non-negative. Thanks to this feature, the accumulated data grow monotonically during the accumulation. Overflow rate of a rust correlation stage ( | 07-02-2009 |
| 20100001900 | RADAR - A radar having a high time and high spatial resolution and being capable of performing volume scanning with an inexpensive and simple structure, while enabling reduction is size and weight. A radar ( | 01-07-2010 |
| 20100066596 | ENHANCED LINE-OF-SIGHT (LOS) PROCESSING FOR ALL-DIGITAL LOS PROCESSOR - An all-digital line-of-sight (LOS) process architecture addresses the size, weight, power and performance constraints of a receiver for use in semi-active or active pulsed electromagnetic (EM) targeting systems. The all-digital architecture provides a platform for enhanced techniques for sensitive pulse detection over a wide field-of-view, adaptive pulse detection, LOS processing and counter measures. | 03-18-2010 |
| 20100066597 | ALL-DIGITAL LINE-OF-SIGHT (LOS) PROCESSOR ARCHITECTURE - An all-digital line-of-sight (LOS) process architecture addresses the size, weight, power and performance constraints of a receiver for use in semi-active or active pulsed electromagnetic (EM) targeting systems. The all-digital architecture provides a platform for enhanced techniques for sensitive pulse detection over a wide field-of-view, adaptive pulse detection, LOS processing and counter measures. | 03-18-2010 |
| 20100085245 | APPARATUS AND METHOD FOR SCALABLE PHASED ARRAY RADAR DATA DISTRIBUTION AND BEAMFORMING - A radar array antenna comprising: a plurality of analog to digital (A/D) converters for converting analog signals from the array to digital signals, the signals supplying input to one or more optical modulators having controllable wavelengths, each optical modulator connected to a corresponding multiplexer, the multiplexer providing outputs to a demultiplexer that distributes the signals to a beamformer. | 04-08-2010 |
| 20100090885 | DIGITAL RADAR SYSTEMS AND METHODS - A digital radar system includes a transmitter, the transmitter configured to transmit a signal; a receiver, the receiver configured to receive a return signal; and two analog to digital conversion (ADC) units, the ADC units configured to digitize the return signal at a rate higher than a Nyquist rate for the transmitted signal. A method of operating a digital radar includes transmitting a signal via a transmitter; receiving a return signal via a receiver; and digitizing the return signal by two analog to digital conversion (ADC) units at a rate higher than a Nyquist rate for the transmitted signal. | 04-15-2010 |
| 20100097266 | SINGLE PLATFORM PASSIVE COHERENT LOCATION USING A DIGITAL RECEIVER - A system and method for performing passive coherent location (PCL). A PCL radar system has high speed analog-to-digital converters (ADC) for digitizing RF signals received on antenna elements of an antenna array. The RF signal received by each antenna element is processed by components within a corresponding physical channel. The RF signals are digitized by the high speed ADC and then processed by a frequency channelizer. The frequency channelizer inputs the RF signal into a digital filter bank comprising a plurality of band pass filters. Each filter in the filter bank may have a corresponding filters, which share the same filtering properties, in the frequency channelizers of each of the physical channels. The outputs of such corresponding filters share a frequency channel. Beam forming and PCL processing are performed for each frequency channel on the filter outputs from each physical channel sharing said frequency channel. A target state is estimated. | 04-22-2010 |
| 20100149022 | Mismatched Filter - The present solution provides methods and systems for realizing hardware efficient mismatched filters for pulse compression codes. For pulse compression codes with sufficiently small sidelobe structures, such as in the cases of odd length Barker codes, the proposed filters require a small number of adders and multipliers per output. This translates to significantly reduced chip-area and lower power consumption when implemented on a chip. | 06-17-2010 |
| 20100231440 | ANTENNA DEVICE AND RADAR APPARATUS - An antenna device includes an antenna substrate and a feed line substrate. The antenna substrate includes subarray antennas, feeding interfaces and a back surface. The subarray antennas are arranged parallel with an interval on a plane. Each subarray antenna includes antenna elements and first feed lines. The first feed lines feed signals from the feeding interface on back surface to the antenna elements. The feed line substrate is attached along back surface and includes second feed lines, first and second mode transformers. Each second feed line has one and other ends portions. Other end portion has wider width than one end portion. Each first mode transformer is located in one end portion and connected to the feeding interface. Each second mode transformer is located in other end portion. One end portions are arranged in a line with interval, and other end portions are alternately arranged across one end portions. | 09-16-2010 |
| 20110227784 | SYSTEM EMPLOYING A DIRECT DIGITAL SYNTHESISER - A DDS based system, such as a radar, includes means for generating a plurality of transmission signals using a DDS, and means for integrating signals derived therefrom, such as received signals. The system further includes means for varying the relative starting phase of the plurality of transmission signals, or adjusting the DDS input clock whilst maintaining similar primary output frequency characteristics of the transmission signals. The approach has the effect of changing the location of unwanted frequency spurs in each of the transmission signals, and hence the effects of these are decreased in the integration process. An improvement in the sensitivity of the system results. Although primarily suited to radar applications the invention may find utility in other systems such as sonar or lidar systems. | 09-22-2011 |
| 20120007773 | Processing Radar Return Signals To Detect Targets - In certain embodiments, an apparatus comprises range matched filters and a Doppler-acceleration matched filter system. The matched filters are configured to receive radar return signals detected by an antenna and range match filter the radar return signals to place the radar return signals into range cells. The Doppler-acceleration matched filter system is configured to Doppler-acceleration process the radar return signals in the range cells to facilitate identification of one or more targets. | 01-12-2012 |
| 20120092212 | METHOD AND RECEIVER FOR RECEIVING AND PROCESSING ALTBOC-MODULATED SATELLITE NAVIGATION SIGNALS - AltBOC-modulated satellite navigation signals transmitted in the two partial bands E | 04-19-2012 |
| 20120133549 | Active Electronically Scanned Array Antenna for Hemispherical Scan Coverage - An antenna architecture for hemispherically-scanning active electronically scanned arrays (AESA). The antenna architecture utilizes variable diameter disks of antenna elements configured in a conical implementation. The antenna elements are oriented such that the element boresight is normal to the surface of the conical structure. Beamforming takes place on each disk first, and them separately in combining the signals from each disk, thereby reducing complexity. The antenna optionally utilizes disks of antenna elements of the same diameter to form a cylindrical antenna, which when combined with a conical configuration create enhanced sectors while maintaining a hemispherical coverage capability. Further, use of two conical configurations can produce a fully spherical coverage capability. | 05-31-2012 |
| 20120293363 | METHOD AND DEVICE FOR RECOGNIZING PRI MODULATION TYPE OF RADAR SIGNAL - A method and device for recognizing a pulse repetition interval (PRI) modulation type of a radar signal are provided. The method for recognizing a pulse repetition interval (PRI) modulation type includes: extracting time of arrival (TOA) information of pulses aligned in time order from a received radar signal; generating a PRI sequence based on a difference of adjacent TOAs in the TOA information of pulses; generating a difference of PRIs (DPRI) sequence by using a difference of the adjacent PRIs in the PRI sequence; generating respective symbol sequences by using specific partition rules from the PRI sequence and the DPRI sequence; and calculating characteristic factors from the symbol sequences, and comparing the characteristic factors with threshold values for discriminating a PRI modulation type to determine the PRI modulation type. Thus, the PRI modulation type, a promising feature for radar signal identification, can be precisely derived. | 11-22-2012 |
| 20130016004 | Photonic-Assisted Digital Radar SystemAANM Pierno; LuigiAACI RomaAACO ITAAGP Pierno; Luigi Roma ITAANM Dispenza; MassimilianoAACI RomaAACO ITAAGP Dispenza; Massimiliano Roma ITAANM Gatta; AlessandroAACI RomaAACO ITAAGP Gatta; Alessandro Roma ITAANM Fiorello; AnnamariaAACI RomaAACO ITAAGP Fiorello; Annamaria Roma ITAANM Secchi; AlbertoAACI RomaAACO ITAAGP Secchi; Alberto Roma ITAANM Ricci; MassimoAACI RomaAACO ITAAGP Ricci; Massimo Roma IT - A photonic-assisted digital radar system comprising an active electronically-scanned antenna; a transmitting section comprising a waveform generator to generate a modulating signal; and a modulator to receive a transmission carrier and the modulating signal and to modulate the transmission carrier by means of the modulating signal; and a receiving section comprising a photonic-assisted analog-to-digital converter to convert electric analog signals into electric digital signals; and a digital signal processor to receive and process the electric digital signals. The photonic-assisted analog-to-digital converter comprises a mode-locked laser to generate an optical clock signal; and an electronic analog-to-digital converter; wherein the electronic analog-to-digital converter, the waveform generator, the modulator and the digital signal processor are configured to operate based on electric clock signals generated based on the optical clock signal. | 01-17-2013 |
| 20130021197 | RADAR PULSE DETECTION USING A DIGITAL RADAR RECEIVER - A system, method, and apparatus for radar pulse detection using a digital radar receiver are disclosed herein. In electronic warfare (EW), radars operate in an environment with highly dense electronic waveforms. As a result, the radars may receive thousands or millions of radar pulses every second. To detect and sort out radar pulses emitted from different radars is a challenging problem in electronic warfare. The present disclosure teaches a radar pulse detection system that utilizes digital channelization and joint-channel detection techniques to detect and separate radar pulses that are sent from different radar emitters. The main features of the present disclosure are: 1.) a digital channelization technique to separate radar pulses from their mixtures; 2.) a multi-channel detection technique to detect radar pulses; and 3.) an innovative technique to separate overlapped radar pulses. | 01-24-2013 |
| 20130050016 | RADAR PACKAGE FOR MILLIMETER WAVES - The present invention relates to a radar package for millimeter waves. A small-size, low-cost, light-weight, and high-precision radar sensor can be embodied by packaging an antenna, transceiver chips, and a digital signal processing chip into a radar-on chip through TSVs in order to reduce the size and integrate the antenna, the transceiver chips, and the digital signal processing chip into one package. Accordingly, a radar sensor for ultra-high precision, applicable to a radar for vehicles, an imaging system for weapon monitoring, and a radar for small-sized, light-weight, and precision measurement, all of which have a millimeter band, and to the autonomous traveling of a robot, can be embodied. | 02-28-2013 |
| 20130162465 | RADAR DEVICE - A radar device includes a signal generator that generates an intermittent signal having a prescribed signal width and signal interval, a transmission signal position adjuster that outputs a transmission signal while adjusting positions of the intermittent signal on the time axis, an RF transmitter that transmits the transmission signal, an RF receiver that receives a reception signal including reflection waves reflected from an object in a measurement subject space, an AD converter that converts the reception signal into a digital signal, and an object detector that detects the object based on the reception signal. The transmission signal position adjuster outputs a transmission signal in which positions of respective signal units of the intermittent signal on the time axis are adjusted in units of a time adjustment amount that is shorter than a sampling interval of the AD converter. | 06-27-2013 |
| 20130222178 | DUAL MODE GROUND PENETRATING RADAR (GPR) - A dual mode ground penetrating radar includes an enclosure which houses radar electronics. The dual mode ground penetrating radar includes a enclosure housing radar electronics. The dual mode ground penetrating radar further includes a first antenna feed having ferrite loading and extending outside of the enclosure. The dual mode ground penetrating radar further includes a second antenna feed spaced apart from the first antenna feed, the second antenna feed having ferrite loading and extending outside of the enclosure. An RF signal is provided in at least one of the first and second antenna feeds by the radar electronics. | 08-29-2013 |
| 20130241767 | Apparatus and Method for Electromagnetic Wave Structure Modulation - Electromagnetic wave structure modulation apparatus comprises an encoded device that has an electromagnetic wave-transparent material having a three-dimensional volume and electromagnetic wave-opaque walls, and a plurality of electromagnetic wave-opaque projections projecting into the electromagnetic wave-transparent material. The apparatus further comprises an interrogating device that has a transceiver operable to transmit an electromagnetic wave into the electromagnetic wave-transparent material, the electromagnetic wave being modulated and reflected by the electromagnetic wave-opaque walls and projections, an antenna operable to receive the reflected electromagnetic waves, and a decoder operable to decode the received reflected electromagnetic waves. | 09-19-2013 |
| 20140009325 | METHOD FOR DE-INTERLEAVING RECEIVED RADAR PULSES USING DYNAMICALLY UPDATED WEIGHTS - The present invention provides a method for separating, or de-interleaving, a stream of radar pulses, interleaved in time, received by a receiving antenna ( | 01-09-2014 |
| 20140015709 | WAVEGUIDE CONNECTING STRUCTURE, ANTENNA DEVICE AND RADAR DEVICE - There is provided a waveguide connecting structure, including first, second, third and fourth waveguides. A first coupling window at one of magnetic field planes of the third waveguide couples the first and third waveguides in such a manner that the electric field planes of both are in parallel. A second coupling window formed at one of the electric field planes of the third waveguide couples the second and third waveguides in such a manner that the electric field planes of the second waveguide is in parallel with the magnetic field planes of the first waveguide. A third coupling window formed at the other one of the electric field planes couples the fourth and third waveguides in such a manner that the electric field planes of the fourth waveguide is in parallel with the magnetic field planes of the first waveguide. | 01-16-2014 |
| 20140152491 | ELECTRONIC DEVICE AND METHOD FOR SENSING ACTIVE STATE OF OBJECT - An electronic device and a method for sensing an active state of an object are provided; the electronic device includes a signal generating module, a non-symmetric antenna module and a signal analyzing module. The signal generating module is configured to generate a pulse width modulation signal, generate a measuring signal with overshoot and undershoot pulses according to the pulse width modulation signal, and generate a reference signal according to the measuring signal. The non-symmetric antenna module includes a transmitting antenna and a receiving antenna. The transmitting antenna is configured to transmit the measuring signal to an object. The receiving antenna is configured to receive the measuring signal reflected by the object. The signal analyzing module is configured to receive and process the reference signal and the measuring signal reflected by the object, so as to obtain an object active state signal. | 06-05-2014 |
| 20140320336 | DIGITAL RADAR OR SONAR APPARATUS - A radar or sonar system amplifies the signal received by an antenna of the radar system or a transducer of the sonar system is amplified and then subject to linear demodulation by a linear receiver. There may be an anti-aliasing filter and an analog-to-digital converter between the amplifier and the linear receiver. The system may also have a digital signal processor with a network stack running in the processor. That processor may also have a network interface media access controller, where the system operates at different ranges, the modulator may produce pulses of two pulse patterns differing in pulse duration and inter-pulse spacing, those pulse patterns are introduced and used to form two radar images with the two images being derived from data acquired in a duration not more than twenty times larger than the larger inter-pulse spacing, or for a radar system, larger than one half of the antenna resolution time. One or more look-up tables may be used to control the amplifier. The radar system may generate digital output which comprises greater than eight levels of radar video. | 10-30-2014 |
| 20140354469 | PULSE RADAR APPARATUS - A pulse radar apparatus is disclosed. The pulse radar apparatus includes a pulse generation unit, a receiver unit, a synchronization unit, and a switch unit. The pulse generation unit generates a pulse based on a transmission trigger signal having a transmission pulse repetition period, and sends the pulse to a target via a transmission antenna. The synchronization unit generates the transmission trigger signal using an external reference clock, provides the transmission trigger signal to the pulse generation unit, and generates a plurality of clock signals having a time delay with respect to the transmission pulse trigger signal using the external reference clock. The switch unit selects any one clock signal from the plurality of clock signals in response to an external selection signal, and provides the selected clock signal to a receiver unit which utilizes a sampler with provided sampling clocks. | 12-04-2014 |
| 20150042508 | METHOD AND APPARATUS FOR RECONSTRUCTING DIELECTRIC IMAGE USING ELECTROMAGNETIC WAVES - A method for reconstructing a dielectric image using electromagnetic waves, comprising: acquiring a measurement value of the electromagnetic waves; generating a matching system matrixes between the meshes; generating a smoothed dyadic Green's function matrix; generating an electromagnetic wave calculation value; calculating a misfit error between the acquired electromagnetic wave measurement value and the generated electromagnetic wave calculation value, and checking whether a change of the calculated misfit error satisfies a predetermined optimization determination condition; updating dielectric parameters at the meshes; and outputting a reconstructed dielectric image in the image reconstruction region. | 02-12-2015 |
| 20150109166 | Radar Unit and Method for Operating a Radar Unit - A radar unit and a method for operating a radar unit. The method for includes a step of determining a functionality of a receiving channel in a radar unit, wherein the radar unit is configured for transmitting and receiving a signal in a frequency band, and has a control means, a transmission path with a voltage controlled oscillator and an output unit for generating a transmission signal and a transmission antenna for emitting the transmission signal, and a receiving path with at least one receiving channel for receiving, processing and conveying a received signal, wherein the at least one receiving channel has at least one receiving antenna and at least one switchable amplifier, wherein the control means is connected to the transmission path and to the receiving path, and is configured to be able to control the transmission path and the receiving path, wherein the at least one switchable amplifier of the at least one receiving channel is disposed at the input of the receiving channel and is connected to the receiving antenna. | 04-23-2015 |
| 20150123841 | Method for search radar processing using random matrix theory - A new method for processing search radar data is revealed using the mathematics of random matrix theory. During the time that the radar receiver is listening for return target echos, the raw data stream is fed to an analogue to digital converter to create a sample voltage file. This sample voltage file is processed by a digital signal processor that computes the eigenvalues of a sample covariance matrix generated for each pulse duration interval. The ratio of the largest to smallest eigenvalue is determined and compared to the system noise eigenvalue ratio. The sensitivity for detecting targets over the present state of the art is expected to be an approximate enhancement factor of one thousand, due to the detection of coherent energy instead of a transmitted waveform. The increase of detection distance for same radar cross section is expected to be an approximate 5.6 enhancement factor. | 05-07-2015 |
| 20150355313 | Hybrid Data Adaptive and Decision Adaptive Antenna Array for Automotive Radar - A hybrid antenna apparatus for a motor vehicle includes steerable transmitter antennas and receiver antennas. The receiver antennas are arranged in sub-arrays for data adaptive and decision adaptive digital beamforming processing. A controllable phase shifter is coupled between each receiver antenna and a summation network in each receiver antenna sub-array. The plurality of sub-array summation networks are combined in mixers along with a receiver direction reference signal and output through A/D converters to the digital beamformer processor. | 12-10-2015 |
| 20160018512 | Method for Generating and Compressing Multi-Sweep-Frequency Radar Signals - A method for generating and compressing multi-sweep-frequency radar signals is provided, based on the idea of reducing the power density of signals on a time-frequency domain. By using a method of circumferentially shifting and superposing a single sweep-frequency signal, sweep-frequency signals multiplexed simultaneously at time and frequency are generated, and for the generated multi-sweep-frequency signals, the sweep-frequency signals are multiplexed simultaneously at time and frequency in a single pulse time period. The multi-sweep-frequency signals multiplexed at frequency are used to perform matched filtering, and then perform segmented accumulation to obtain distance resolution which is inversely proportional to the bandwidth and the signal-to-noise ratio after the single sweep-frequency signal is compressed under the same energy condition, thereby realizing secondary compression on the multi-sweep-frequency signals. The signals generated by the method have higher spectrum utilization rate and lower interception probability, and guarantee the distance resolution and detection distance of a radar. | 01-21-2016 |
| 20160033620 | METHOD AND APPARATUS FOR GENERATING A BIT STREAM SIGNAL HAVING A REDUCED OUTPUT SWING - An automotive radar apparatus includes a bit stream modulation circuit configured to generate a bit stream signal at an output thereof and a driver circuit having an input coupled to the output of said bit stream modulation circuit and configured to generate a corresponding driver bit stream signal having a reduced output swing at the driver circuit output. Also included is a filter circuit having an input coupled to the output of said driver circuit and configured to generate a filtered bit stream signal at the filter circuit output. Additionally included is a VCO having an input coupled to the output of said filter circuit and configured to generate an RF output signal at the VCO output. A corresponding method is also provided. | 02-04-2016 |
| 20160054432 | Combining Reflected Signals - A system, computer-readable medium, and method for receiving reflected signals. In one implementation, the system includes a receiver, a pulse compressor, a framer, and a frame generator. The receiver receives the reflected signals. The pulse compressor compresses the reflected signals and the framer interprets the reflected signals. The frame generator combines one or more modified frames associated with the reflected signals. | 02-25-2016 |
| 20160077193 | HIGH RESOLUTION TIMING DEVICE AND RADAR DETECTION SYSTEM HAVING THE SAME - A high resolution timing device is provided. The high resolution timing device includes a first and a second dock delay circuits. The first clock delay circuit receives an input reference clock signal to generate a first multiple frequency output clock signal, divide the first multiple frequency output clock signal to generate a first original frequency output clock signal and perform a clock-delaying process thereon according to the first multiple frequency output clock signal to generate first clock-delayed signals. The second clock delay circuit receives one of the first clock-delayed signals to generate a second multiple frequency output clock signal, divide the second multiple frequency output clock signal to generate a second original frequency output clock signal and perform the clock-delaying process thereon according to the second multiple frequency output clack signal to generate second clock-delayed signals. | 03-17-2016 |
| 20160084956 | DOPPLER-BASED SEGMENTATION AND OPTICAL FLOW IN RADAR IMAGES - In an embodiment, a method for processing a sequence of images is provided. The method receives a sequence of images generated by a radar. Each image includes a plurality of pixels. Each pixel includes radial velocity information. The method estimates optical flow for the pixels within an image in the sequence of images by using the radial velocity information for the pixels as a constraint. | 03-24-2016 |
| 20160097840 | SIMULTANEOUS MULTI-FREQUENCY SIGNAL PROCESSING METHOD - A method for the simultaneous multi-frequency signal processing within a single receiver is presented. The pulse compression or filtering method samples the received signal at a data rate commensurate with the maximum frequency separation of waveforms at separate frequencies being received, but the compression calculations are only performed at a rate commensurate with the bandwidth of each individual transmit waveform set. The method reduces the processor requirements for extracting all available information from these signals. | 04-07-2016 |
| 20160191232 | DYNAMIC MEASUREMENT OF FREQUENCY SYNTHESIZER NOISE SPURS OR PHASE NOISE - A method of measuring phase noise (PN). A PLL frequency synthesizer is provided including a first phase frequency detector (PFD) receiving a reference frequency signal coupled to a first charge pump (CP) coupled to a VCO having an output fedback to the first PFD through a feedback divider that provides a divided frequency signal to the first PFD which outputs an error signal, and PN measurement circuitry including a replica CP coupled to an output of a second PFD or the first PFD. The error signal is received at the replica CP or the divided and reference frequency signal are received at the second PFD, wherein the replica CP outputs a scaled phase error current which is current-to-voltage converted and amplified to provide an amplified phase error voltage, and digitized to provide a digital phase error signal. The digital phase error signal is frequency analyzed to generate a PN measurement. | 06-30-2016 |
| 20160195606 | SIGNAL PROCESSING DEVICE | 07-07-2016 |
| 20170234970 | WAVEFORM PEAK DETECTION AND TIMING FOR RADAR APPLICATIONS | 08-17-2017 |
| 342196000 | Fast fourier transform (FFT) | 11 |
| 20080303711 | RADAR APPARATUS - A radar apparatus includes: a plurality of receiving antennas disposed at regular spacings; two transmitting antennas which are positioned each at opposed ends of the receiving antennas, and a spacing of which away from the receiving antennas adjacent thereto is a natural number multiple of half a disposition spacing of the plurality of the receiving antennas; and a signal processor which, after the two transmitting antennas transmit electric waves in time divisions, and then one for each of the plurality of receiving antennas receives waves reflected from a target, subjects the obtained received signals to a digital beam forming process, in which case the signal processor, after subjecting the received signals to a fast Fourier transform process in a time direction, carries out a fast Fourier transform process in a space direction. | 12-11-2008 |
| 20090009385 | Method and Arrangement for Detecting Moving Objects with a Radar - Moving objects are detected with a radar by collecting samples of a received signal over an integration period. The terms of a match function contain a product of a sample of said received signal and a delayed-in-time, Doppler-shifted replica of a transmission and depend on parameters that describe an object that caused a reflection of the transmission. The most probable values of the parameters are found by maximizing the match function through Fourier transforming a vector consisting of terms of the match function. Those of said products that contain a non-zero contribution of said delayed-in-time, Doppler-shifted replica of a transmission are actually computed while the others of said products are zero Only non-zero blocks of the products count as final terms to the vector to be Fourier transformed that have nonzero value while intermittent blocks that have zero value are left out. The most probable values of the parameters are those that result from Fourier transforming the vector consisting of the final terms. | 01-08-2009 |
| 20090073028 | SYSTEM AND METHOD FOR DETECTION AND TRACKING OF TARGETS - System and method for detection and tracking of targets, which in a preferred embodiment is based on the use of fractional Fourier transformation of time-domain signals to compute projections of the auto and cross ambiguity functions along arbitrary line segments. The efficient computational algorithms of the preferred embodiment are used to detect the position and estimate the velocity of signals, such as those encountered by active or passive sensor systems. Various applications of the proposed algorithm in the analysis of time-frequency domain signals are also disclosed. | 03-19-2009 |
| 20110187586 | RADAR DETECTION METHOD, NOTABLY FOR AIRBORNE RADARS IMPLEMENTING AN OBSTACLE DETECTION AND AVOIDANCE FUNCTION - A method includes: generating a frequency-modulated continuous signal, an emission sequence being formed of successive ramps centred on a carrier frequency; fixing a modulation band ΔF and the duration Tr of a recurrence in such a way that at the range limit, a reception ramp appears shifted by at least one given frequency with respect to the corresponding emission ramp, on account of the propagation delay for the outward-return journey to a target kTr+θ, k being an integer and θ a duration less than Tr; demodulating the signal received by the signal emitted, the resulting signal including a first sinusoid at the frequency δFdim=(1−(θ/Tr)·ΔF and a second sinusoid at the frequency δFd=(θ/Tr)·ΔF; sampling the resulting signal and performing a first fast Fourier transformation on this resulting signal over the duration of each emission ramp; detecting in the resulting spectrum the spectral lines appearing at the frequencies δFd and δFdim, and performing the vector sum of these two spectral lines after resetting them into phase with respect to one another; and performing a detection by comparing the modulus of the vector sum with a predetermined threshold. | 08-04-2011 |
| 20120326920 | NON DOPPLER-TOLERANT PULSE COMPRESSION IN RADAR SYSTEMS - A method for processing return radar waveforms in response to transmitted radar waveforms. The method includes receiving, with a processor, a return radar waveform having a Doppler shift larger than Doppler tolerance. The method also includes separating, with the processor, the return radar waveform into a plurality of shortened waveforms. The method also includes compressing, with the processor, each of the plurality of shortened waveforms with a shortened form of the return radar waveform. The method also includes summing, with the processor, the plurality of compressed, shortened waveforms by computing a Doppler Fourier transform for each radar range bin of the return radar waveform using the plurality of compressed, shortened waveforms. | 12-27-2012 |
| 20130321199 | PASSIVE RADAR DEVICE - A passive radar device includes: a pulse-by-pulse range compression unit executing cross-correlation processing between received signals of a direct wave and scattered wave on each of pulses divided by a direct-wave reception unit and a scattered-wave reception unit, and calculating a pulse-by-pulse range profile; a block-by-block Doppler processing unit calculating a first Doppler frequency spectrum by executing pulse-direction Fourier transform in block units each grouping plural pulses; a Doppler frequency cell-associated range migration compensation unit compensating a range-direction movement amount with respect to the first Doppler frequency spectrum on a Doppler-frequency-cell-by-Doppler-frequency-cell basis and on a block-by-block basis; and a block-direction Doppler processing unit calculating a second Doppler frequency spectrum by executing block-direction Fourier transform on an output from the Doppler frequency cell-associated range migration compensation unit. | 12-05-2013 |
| 20140159947 | PROCESSING METHOD FOR FMCW RADAR SIGNAL WITH DUAL PULSE REPETITION FREQUENCY - A processing method for radar signal with dual pulse repetition frequency, comprising: generating a first transmission signal and a second transmission signal, and perform a transmission process; reflecting a first echo signal and a second echo signal from an object, and converting the first transmission signal and the second transmission signal to a frequency domain information by using 2D (Two Dimension) fast Fourier transform (FFT); and filtering noise in the frequency domain information, and performing a calculation program by using a algorithm to obtain Doppler shift of the object. Thereby, the processing method of the present invention can overcome the bad operation ability of the lower hardware and advance the radar target detection speed restrictions. | 06-12-2014 |
| 20150346323 | Vehicle Radar Diagnostic Arrangement - A vehicle radar system ( | 12-03-2015 |
| 20160131743 | METHOD AND DEVICE FOR PROCESSING RADAR SIGNALS - An example relates to a method for processing radar signals, wherein said radar signals comprise digitized data received by at least one radar antenna, the method comprising (i) determining FFT results based on the digitized data received; and (ii) storing a first group of the FFT results without a second group of the FFT results. | 05-12-2016 |
| 20160131744 | METHOD AND DEVICE FOR PROCESSING RADAR SIGNALS - A method for processing radar signals, wherein said radar signals comprise digitized data received by at least one radar antenna, the method comprising (i) determining FFT results based on the digitized data received; and (ii) storing a first group of the FFT results, wherein the first group of FFT results comprises at least two portions, wherein a first portion of FFT results is stored with a first accuracy and a second portion of FFT results is stored with a second accuracy. | 05-12-2016 |
| 20160170010 | METHOD AND DEVICE FOR RADAR APPLICATIONS | 06-16-2016 |
| 342197000 | With video quantizer | 1 |
| 20110032141 | Modular Radar Architecture - The present invention relates to the field active electronic scanning radar systems. It provides an architecture for active antenna radar based on a functional unit, the elementary radar unit. The elementary radar unit comprises all of the functions required for generating N independent radar channels. In this regard, it comprises a radiating face with N radiating elements and means for independently generating the radar waves emitted by each of the radiating elements and all of the functions for receiving the waves picked up by this radiating element, together with the digitization of the video signal obtained after reception. It also comprises local digital processing means allowing the digital signals coming from the N channels to be jointly processed. The association of M elementary radar units with a general synchronization module and a global digital processing module advantageously allows a truly modular radar system to be formed, whose configuration can be modified, notably according to the revision of the functions assigned to the radar in question. | 02-10-2011 |
