-
公开(公告)号：US12123970B2
公开(公告)日：2024-10-22
申请号：US17484119
申请日：2021-09-24
申请人： NXP B.V.
发明人： Ryan Haoyun Wu , Dongyin Ren , Satish Ravindran
CPC分类号： G01S7/354 , G01S13/584 , G01S7/356
摘要： Aspects of the present disclosure are directed to radar and radar processing. As may be implemented in accordance with one or more embodiments involving multi-input multi-output (MIMO) co-prime radar signals transmitted by a plurality of transmitters and reflected from at least one target, the reflected radar signals are processed by resolving ambiguities associated with a range-Doppler detection based on unique pulse repetition frequencies (PRF)s associated with respective chirp groups of the reflected radar signals. Phase compensation is applied to compensate for motion-induced phased biases and, thereafter, Doppler estimates are reconstructed to provide a dealiased version of the reflected radar signals.
-
公开(公告)号：US20240345213A1
公开(公告)日：2024-10-17
申请号：US18399665
申请日：2023-12-28
发明人： Lei ZHANG , Yi CHEN , Xiao WANG , Lanfeng DAI , Yige CHENG , Zengyu YU , Yi MA , Tongyu ZHU
CPC分类号： G01S7/354 , G01S13/584
摘要： The disclosed are a signal processing method, a signal processing device, a radar, a medium, a program product and a terminal. The method is applied to the radar, the radar includes M transmit channels, and the method includes: transmitting, during a first transmit cycle, a first detection signal through the M transmit channels; transmitting, during a second transmit cycle, a second detection signal through ml transmit channels in the M transmit channels, where m1
-
公开(公告)号：US12111416B2
公开(公告)日：2024-10-08
申请号：US17526627
申请日：2021-11-15
申请人： Imec vzw
发明人： Marc Bauduin , Andre Bourdoux
CPC分类号： G01S7/354 , G01S7/358 , G01S13/325 , G01S13/58
摘要： A method for facilitating robust radar detection comprises generating a radar signal in a digital domain along at least one transmission path, the radar signal comprises a number of M periodic repetitions of a code sequence with a length Lc, multiplied with a progressive phase rotation ej·π/K·n, where Lc and M are integers, K is an integer or a non-integer, and n is a discrete time index corresponding to a code rate. The method further comprises generating a process input signal in the digital domain along at least one receiving path from a digitized reflection signal corresponding to the radar signal by multiplying the digitized reflection signal with a progressive phase rotation e−j·π/K·n. In this context, K is defined such that a ratio Lc/2·K is a non-integer, and M is defined such that a ratio Lc·M/2·K is an integer.
-
公开(公告)号：US20240310480A1
公开(公告)日：2024-09-19
申请号：US18183292
申请日：2023-03-14
发明人： David Addison , Dyson Wilkes , Markus Bichl , Sandeep Vangipuram
CPC分类号： G01S7/354 , G01S7/356 , G01S13/584
摘要： A radar system including a direct memory access (DMA). The DMA includes a bus interface including control/status registers and data-in/data-out registers. The DMA also includes potential object queue memory coupled to the bus interface, and a potential object queue logic coupled to the potential object queue memory. The DMA also includes boundary checking circuitry configured to detect whether any portion of a DMA read configuration is greater than a maximum range bin or less than a minimum range bin. The boundary checking circuitry detects whether any portion of the DMA read configuration is greater than a maximum Doppler bin or less than a minimum Doppler bin.
-
公开(公告)号：US12085634B2
公开(公告)日：2024-09-10
申请号：US17222569
申请日：2021-04-05
发明人： Andreas Von Rhein
IPC分类号： G01S13/58 , G01S7/35 , G01S7/40 , G01S13/931
CPC分类号： G01S13/584 , G01S7/354 , G01S7/4026 , G01S13/931 , G01S2013/93274 , G01S2013/93275
摘要： A method for capture in a radar system having at least one receive antenna of a vehicle, wherein the following steps are carried out repeatedly: carrying out a capture of a sensor signal in each of the receive antennas of the radar system, wherein the sensor signal captured as a result is specific for a detection of raw targets by the radar system, and carrying out a comparison of the captured sensor signal or the captured sensor signals of different receive antennas for the provision in each case of a phase-adjusted sensor signal, wherein the phase-adjusted sensor signals from different repetitions of the steps are combined to provide a capture result.
-
公开(公告)号：US20240288532A1
公开(公告)日：2024-08-29
申请号：US18570073
申请日：2021-06-25
发明人： Tatsuya KAMIMURA , Osamu WADA
CPC分类号： G01S7/0232 , G01S7/354
摘要： A radar apparatus includes a transceiver and an interference wave avoidance device. The transceiver outputs a transmission wave that is frequency-modulated, and receives a reflected wave propagated by reflection of the transmission wave from a target and outputs a reception signal. When an interference wave that is a radio wave other than a reflected wave and that is frequency-modulated in a mode different from a mode of the transmission wave is received together with the reflected wave, the interference wave avoidance device changes a modulation frequency of the transmission wave based on a result of estimating a frequency of the interference wave received.
-
7.发明公开公开(公告)号：US20240264271A1
公开(公告)日：2024-08-08
申请号：US18432730
申请日：2024-02-05
申请人： Axis AB
发明人： Sebastian HEUNISCH , Santhosh NADIG
摘要： A method for identifying that a first FMCW radar unit is subject to parallel incoherent interference from a second FMCW radar unit is disclosed. The method comprises: acquiring a range-Doppler map, calculating a range-resolved signal for a negative half (corresponding to negative Doppler shifts) and a positive half (corresponding to positive Doppler shifts) of the range-Doppler map, and calculating a range-dependent noise profile for the range-Doppler map as, for each range interval, the smaller of the range-resolved signal for the negative half and the positive half. The method further comprises: identifying parallel incoherent interference in the range-Doppler map if a measure of a deviation between the range-resolved signal for the negative half and the positive half is smaller than a predetermined deviation threshold, and a measure of a difference between the range-dependent noise profile and a global noise floor of the range-Doppler map exceeds a predetermined noise threshold.
-
公开(公告)号：US20240248171A1
公开(公告)日：2024-07-25
申请号：US18413280
申请日：2024-01-16
CPC分类号： G01S7/4008 , G01S7/354 , G01S7/356
摘要： A method for calibrating a transmitter of a plurality of transmitters of a radar system is provided. The method includes setting the radar transmitter to be calibrated to a first Doppler Division Multiplexing (DDM) pattern and associating each of the other transmitters in the plurality with a respective second DDM pattern. A target is detected by performing radar detection with the plurality of transmitters, wherein the transmitter is operated with the first DDM pattern and each of the other transmitters is operated with its associated second DDM pattern, extracting Doppler Fourier transform coefficients for a Doppler spectrum peak corresponding to the target and for spurs associated with the peak, applying an inverse discrete Fourier transform to the extracted Doppler Fourier transform coefficients, detecting a phase error of the transmitter using a result of the inverse discrete Fourier transform and calibrating the transmitter according to the detected phase error.
-
公开(公告)号：US20240248169A1
公开(公告)日：2024-07-25
申请号：US18157511
申请日：2023-01-20
发明人： Zeshan Ahmad , Mayank Kumar Singh
CPC分类号： G01S7/038 , G01S7/354 , H03F3/245 , G01S13/931 , H03F2200/165 , H03F2200/171 , H03F2200/294 , H03F2200/451
摘要： In an embodiment, a system includes: an analog-to-digital converter (ADC); a transmitter path; a receiver path including a first amplifier including: an output coupled to the ADC, and a first high-pass filter; and a controller coupled to the transmitter path and to the receiver path, where the controller is configured to: cause a corner frequency of the first high-pass filter to increase from a first value to a second value, simultaneously or after causing the corner frequency of the first high-pass filter to increase, cause the transmitter path to be enabled, and after a first signal begins transmission in the enabled transmitter path, and during transmission of the first signal in the enabled transmitter path, cause the corner frequency of the first high-pass filter to decrease from the second value to the first value.
-
公开(公告)号：US12038503B2
公开(公告)日：2024-07-16
申请号：US17394383
申请日：2021-08-04
IPC分类号： G01S13/931 , G01S7/02 , G01S7/35 , G01S13/34 , G01S13/58
CPC分类号： G01S13/931 , G01S7/354 , G01S13/343 , G01S13/584 , G01S7/0233 , G01S7/356
摘要： A fast ramp frequency modulated continuous wave (FMCW) radar system is described herein, where the fast ramp FMCW radar system is configured to employ velocity labeled multiplexing (VLM) in connection with generating detections for objects in a scene. Transmitters in the radar system are assigned different velocity labels that corresponds to different phase rates of change of consecutive chirps in signals emitted by the transmitters. Approaches for generating detections based upon echo signals that correspond to the emitted signals are also described herein.
-
-
-
-
-
-
-
-
-
搜索结果
703 条记录 (耗时 0.025 秒)
