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1. 发明授权

US11828839B2 Method and apparatus for operating radar 有权
公开(公告)号：US11828839B2
公开(公告)日：2023-11-28
申请号：US17536539
申请日：2021-11-29
申请人： Samsung Electronics Co., Ltd.
发明人： Sungdo Choi
IPC分类号： G01S13/58 , G01S13/89 , G01S13/532 , G01S13/18 , G01S13/53 , G01S13/64 , G01S13/87 , G01S13/931
CPC分类号： G01S13/584 , G01S13/18 , G01S13/53 , G01S13/532 , G01S13/64 , G01S13/87 , G01S13/89 , G01S13/931
摘要： A radio detection and ranging (radar) operating apparatus includes: radar sensors configured to receive signals reflected from an object; and a processor configured to generate Doppler maps for the radar sensors based on the reflected signals and estimate a time difference between the radar sensors based on the generated Doppler maps.

2. 发明授权

US11340331B2 Radar data buffering 有权
公开(公告)号：US11340331B2
公开(公告)日：2022-05-24
申请号：US15978457
申请日：2018-05-14
申请人： UHNDER, INC.
发明人： Monier Maher , Curtis Davis , Frederick Rush , Aria Eshraghi
IPC分类号： G01S7/35 , G01S13/64 , G01S7/285 , G01S13/931 , G01S13/06 , G01S7/03 , G01S13/87 , G01S13/42 , G01S13/58 , G11C11/409 , G01S7/40 , G01S13/32 , G01S13/34 , G06F7/72
摘要： A radar system includes transmitters and receivers configured for installation and use in a vehicle. The transmitters transmit radio signals. The receivers receive radio signals that include the transmitted radio signals reflected from objects in an environment. Each receiver has a controller, a buffer, and a post-buffer processor. The receiver processes the received radio signals and stored data samples in the buffer. The buffer operates in a plurality of modes defined by the controller. Two or more modes of operation of the plurality of modes are performed with a same set of data samples stored in the buffer. The post-buffer processor receives data samples from the buffer and performs at least one of correlation processing to determine object ranges, Doppler processing to determine object velocity, and, in combination with other receivers of the plurality of receivers, further processing to determine angular locations of the objects.

3. 发明授权

US11047972B2 Method, apparatus and device for determining a velocity of an object in a time switched MIMO radar system 有权
公开(公告)号：US11047972B2
公开(公告)日：2021-06-29
申请号：US16360014
申请日：2019-03-21
申请人： Steradian Semiconductors Private Limited
发明人： Apu Sivadas , Gireesh Rajendran
IPC分类号： G01S13/64 , G01S13/532 , G01S13/86 , G01S7/35 , G01S13/58 , G01S7/40
摘要： A multichannel radar system comprising a set of antennas each receiving a sequence of chirps reflected from plurality of objects, a range detector generating a set of range bins for each chirp, a beam former operative to generate a set of dominant frequency components from a group of range bins picked from the set of range bins across the set of antennas, a nearness detector for separating the set of dominant frequencies into a first set of dominant frequencies and a second set of dominant frequencies, a frequency subtractor configured to shift the each dominant frequency in the first set of dominant frequencies by its phase by a first value to form a third set of phase shifted dominant frequencies, and a Doppler estimator estimating a Doppler frequency of the each dominant frequency in the set of dominant frequencies from the third set of phase shifted dominant frequencies and the second set of dominant frequencies.

4. 发明申请

US20200049812A1 MIMO Radar Coding For Resolving Velocity Ambiguity 审中-公开
公开(公告)号：US20200049812A1
公开(公告)日：2020-02-13
申请号：US16101846
申请日：2018-08-13
申请人： NXP B.V.
发明人： Feike Guss Jansen
IPC分类号： G01S13/64 , G01S13/58 , G01S7/35
摘要： An apparatus for resolving velocity ambiguity in a MIMO RADAR includes a plurality of transmit channels and a virtual channel Each transmit channel includes a transmit antenna configured to transmit a plurality of chirps. Each chirp includes a frequency ramp of a transmit frequency of the respective transmit channel. Each transmit channel is orthogonal to another transmit channel and to a virtual transmit channel. A waveform generator is configured to generate a local oscillator (LO) signal for each transmit channel. A frequency offset circuit is configured to modify the LO signal of each transmit channel with a respective frequency offset to generate the respective transmit frequency.

5. 发明授权

US10274594B2 Direct Doppler-free velocity measurement in linear frequency modulation radar 有权
公开(公告)号：US10274594B2
公开(公告)日：2019-04-30
申请号：US15370324
申请日：2016-12-06
申请人： GM Global Technology Operations LLC
发明人： Alexander Pokrass , Igal Bilik , Shahar Villeval
IPC分类号： G01S13/18 , G01S13/64 , G01S13/93 , G01S13/34 , G01S13/58
摘要： A method and system to estimate a velocity of a target use a radar to transmit a linear frequency modulated chirp from each of a plurality of transmit elements and receive resulting reflections. The system also includes a processor to process the reflections resulting from a frame of chirps at a time and compute the velocity based on determining a number of the frames of chirps for the target to move a specified distance. The processor processes the reflections by performing a range fast Fourier transform (FFT) such that the specified distance is a range spanned by a range bin and each frame of chirps is one transmission of the chirp by each of the plurality of transmit elements.

6. 发明申请

US20180259620A1 RADAR DATA BUFFERING 审中-公开
公开(公告)号：US20180259620A1
公开(公告)日：2018-09-13
申请号：US15978457
申请日：2018-05-14
申请人： UHNDER, INC.
发明人： Monier Maher , Curtis Davis , Frederick Rush , Aria Eshraghi
IPC分类号： G01S7/35 , G01S13/93 , G01S13/64 , G01S13/06 , G01S7/285
CPC分类号： G01S7/352 , G01S7/032 , G01S7/285 , G01S7/354 , G01S7/4017 , G01S7/4021 , G01S13/06 , G01S13/325 , G01S13/34 , G01S13/42 , G01S13/584 , G01S13/64 , G01S13/87 , G01S13/878 , G01S13/931 , G01S2013/9375 , G01S2013/9378 , G01S2013/9385 , G06F7/724 , G11C11/409
摘要： A radar system includes transmitters and receivers configured for installation and use in a vehicle. The transmitters transmit radio signals. The receivers receive radio signals that include the transmitted radio signals reflected from objects in an environment. Each receiver has a controller, a buffer, and a post-buffer processor. The receiver processes the received radio signals and stored data samples in the buffer. The buffer operates in a plurality of modes defined by the controller. Two or more modes of operation of the plurality of modes are performed with a same set of data samples stored in the buffer. The post-buffer processor receives data samples from the buffer and performs at least one of correlation processing to determine object ranges, Doppler processing to determine object velocity, and, in combination with other receivers of the plurality of receivers, further processing to determine angular locations of the objects.

7. 发明申请

US20160124086A1 RADAR AMBIGUITY RESOLVING DETECTOR 有权
标题翻译：雷达系列解决方案
公开(公告)号：US20160124086A1
公开(公告)日：2016-05-05
申请号：US14527840
申请日：2014-10-30
申请人： NXP B.V.
发明人： Feike Guus Jansen , Zoran Zivkovic
IPC分类号： G01S13/64 , G01S13/93 , G01S7/292 , G01S13/58
CPC分类号： G01S13/931 , G01S7/2922 , G01S13/227 , G01S13/343 , G01S13/42 , G01S13/5246 , G01S13/582 , G01S13/584 , G01S2007/356 , G01S2013/9321
摘要： Various exemplary embodiments relate to a method for determining the velocity of an object using radar system having a processor, including: receiving, by a processor, a first digital signal corresponding to a first transmit signal; receiving, by the processor, a second digital signal corresponding to a second transmit signal; processing the first digital signal to produce a first range/relative velocity matrix; detecting objects in the first range/relative velocity matrix to produce a first detection vector; unfolding the first detection vector; processing the second digital signal to produce a second range/relative velocity matrix; interpolating the second range/relative velocity matrix in the relative velocity direction wherein the interpolated second range/relative velocity matrix has a frequency spacing corresponding to the frequency spacing of the first range/relative range velocity matrix in the relative velocity direction; detecting objects in the second range/relative velocity matrix to produce a second detection vector; unfolding the second detection vector; and determining a true velocity of the detected objects based upon the unfolded first and second detection vectors.
摘要翻译：各种示例性实施例涉及使用具有处理器的雷达系统来确定物体的速度的方法，包括：由处理器接收对应于第一发射信号的第一数字信号; 由处理器接收对应于第二发射信号的第二数字信号; 处理第一数字信号以产生第一范围/相对速度矩阵; 检测所述第一范围/相对速度矩阵中的对象以产生第一检测向量; 展开第一个检测向量; 处理所述第二数字信号以产生第二范围/相对速度矩阵; 内插相对速度方向上的第二范围/相对速度矩阵，其中内插的第二范围/相对速度矩阵具有与相对速度方向上的第一范围/相对范围速度矩阵的频率间隔相对应的频率间隔; 检测所述第二范围/相对速度矩阵中的对象以产生第二检测向量; 展开第二检测向量; 以及基于展开的第一和第二检测向量来确定检测到的对象的真实速度。

8. 发明申请

US20160103213A1 Three Dimensional (3D) Tracking of Objects in a Radar System 审中-公开
标题翻译：雷达系统中物体的三维（3D）跟踪
公开(公告)号：US20160103213A1
公开(公告)日：2016-04-14
申请号：US14877888
申请日：2015-10-07
申请人： Texas Instruments Incorporated
发明人： Muhammad Zubair Ikram , Murtaza Ali
IPC分类号： G01S13/66 , G01S13/64 , G01S13/42
CPC分类号： G01S13/42 , G01S13/584 , G01S13/723 , G01S13/931
摘要： A method for tracking objects in three dimensions in a radar system is provided that includes receiving spherical coordinates of an estimated location of each object of a plurality of detected objects, a range rate of each object, and variances for the spherical coordinates and the range rate of each object, determining whether or not each object is currently being tracked, updating a tracking vector for an object based on the object spherical coordinates, range rate, and variances when the object is currently being tracked, and initializing a tracking vector for an object when the object is not currently being tracked, wherein a tracking vector for an object is a process state vector for an extended Kalman filter designed to track an object, elements of the tracking vector including Cartesian coordinates of the object location, the object velocity in three directions, and the object acceleration in three directions.
摘要翻译：提供了一种用于在雷达系统中跟踪三维物体的方法，其包括接收多个检测对象的每个对象的估计位置的球面坐标，每个对象的范围速率，以及球面坐标和范围速率的方差确定每个对象当前是否正在被跟踪，当对象当前被跟踪时，基于对象球坐标，范围速率和方差来更新对象的跟踪向量，以及初始化对象的跟踪向量当对象当前未被跟踪时，其中对象的跟踪向量是被设计为跟踪对象的扩展卡尔曼滤波器的处理状态向量，包括对象位置的笛卡尔坐标的跟踪矢量的元素，三个对象速度方向，物体加速三个方向。

9. 发明授权

US08686894B2 Radar imaging apparatus, imaging method, and program thereof 有权
标题翻译：雷达成像装置，成像方法及其程序
公开(公告)号：US08686894B2
公开(公告)日：2014-04-01
申请号：US13478323
申请日：2012-05-23
申请人： Takeshi Fukuda , Kenichi Inoue , Toru Sato , Takuya Sakamoto , Kenshi Saho
发明人： Takeshi Fukuda , Kenichi Inoue , Toru Sato , Takuya Sakamoto , Kenshi Saho
IPC分类号： G01S13/42 , G01S13/64
CPC分类号： G01S13/288 , G01S3/48 , G01S13/64 , G01S13/89 , G01S2007/2886
摘要： A radar imaging apparatus includes: (i) a delay code generation unit which repeats, for M scan periods, scan processing of generating, using a transmission code, N delay codes in a scan period for scanning N range gates having mutually different distances from the radar imaging apparatus; (ii) a signal storage unit which stores, in association with a range gate and a scan period, a baseband signal; (iii) a memory control unit which repeatedly writes, in the signal storage unit, for the M scan periods, N demodulated signals corresponding to a single scan period, and reads out a group of M demodulated signals corresponding to mutually different scan periods; (iv) a Doppler frequency discrimination unit which performs frequency analysis on demodulated signals having the same range gate; and (v) a direction of arrival calculation unit which estimates a direction of a target.
摘要翻译：一种雷达成像装置包括：（i）延迟码生成单元，对于M个扫描周期，重复使用发送码的扫描处理，用于扫描周期中的N个延迟码，用于扫描距离雷达成像装置; （ii）信号存储单元，其与范围门和扫描周期相关联地存储基带信号; （iii）存储器控制单元，其在信号存储单元中重复地在M个扫描周期中写入与单个扫描周期相对应的N个解调信号，并且读出对应于相互不同的扫描周期的一组M个解调信号; （iv）对具有相同范围门的解调信号进行频率分析的多普勒频率鉴别单元; 和（v）估计目标方向的到达方向计算单元。

10. 发明授权

US5606324A Radar system 失效
标题翻译：雷达系统
公开(公告)号：US5606324A
公开(公告)日：1997-02-25
申请号：US569374
申请日：1995-12-07
申请人： Walter S. Justice , David A. Marquis , Ronald A. Wagner
发明人： Walter S. Justice , David A. Marquis , Ronald A. Wagner
IPC分类号： G01S13/02 , G01S7/288 , G01S13/18 , G01S13/24 , G01S13/26 , G01S13/44 , G01S13/53 , G01S13/64 , G01S13/66 , G01S13/70 , G01S13/72
CPC分类号： G01S13/53 , G01S13/24 , G01S13/66 , G01S13/18 , G01S13/449 , G01S13/64 , G01S13/70 , G01S13/726 , G01S2007/2883
摘要： A radar system having a transmitter for transmitting a series of radio frequency (RF) pulses with sequential, incrementally changing carrier frequencies. A receiver receives energy from multiple scattering points of an object reflecting such transmitted RF pulses. The received energy from each one of such scattering points includes a series of radio frequency (RF) pulses corresponding to the transmitted pulses delayed in time, .tau., from the transmitted pulses an amount proportional to the range to such scattering point and shifted in frequency from the carrier frequency an amount proportional to the velocity of such scattering point. The receiver includes a heterodyning section, responsive to a range tracking error signal, .epsilon..sub.R, and a velocity tracking error signal, .DELTA..sub.VEL, for producing a series of pulsed signals for each one of the scattering points. Each one of the pulsed signals for any given scatterer sequentially changes in phase, .phi., at a rate, .DELTA..phi./.DELTA.T, related to the range to the scattering point producing such one of the pulsed signal series. A processor, responsive to each of the series of pulsed signals produced by the heterodyning section, unambiguously determines from the frequency spectrum thereof the range tracking error signal, .epsilon..sub.R, and velocity tracking error signal, .DELTA..sub.VEL, for each of the scattering points as well as the range centroid.
摘要翻译：一种具有发射机的雷达系统，用于发射具有顺序的递增变化的载波频率的一系列射频（RF）脉冲。接收器从反射这种发送的RF脉冲的物体的多个散射点接收能量。从这些散射点的每一个接收的能量包括一系列射频（RF）脉冲，对应于从时间上延迟的发射脉冲，τ，从发射脉冲开始，与这样的散射点的范围成比例并且频率偏移载波频率与这种散射点的速度成比例的量。接收机包括响应于范围跟踪误差信号εR和速度跟踪误差信号DELTA VEL的外差部分，用于为每个散射点产生一系列脉冲信号。对于任何给定的散射体的每个脉冲信号以与产生这样的脉冲信号序列的散射点的范围有关的速率DELTA phi / DELTA T的相位顺序地改变。响应于由外差部分产生的一系列脉冲信号中的每一个的处理器从其频谱中明确地确定每个散射点的范围跟踪误差信号，εR和速度跟踪误差信号DELTA VEL，如以及范围重心。

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