公开(公告)号：US20180335517A1

公开(公告)日：2018-11-22

申请号：US15755911

申请日：2016-12-29

Applicant: China University of Mining & Technology, Beijing

Inventor： Suping Peng ,  Jingtao Zhao ,  Xianlei Xu ,  Wenfeng DU ,  Xiaoqin Cui

IPC: G01S13/88

CPC classification number: G01S13/885 ,  G01S7/2922 ,  G01S13/426 ,  G01S2007/2883 ,  G01V3/12 ,  G01V8/005

Abstract: A method and a device for detecting a discontinuous body with ground penetrating radar, comprising acquiring a ground penetrating radar signal of a predefined underground space, where the ground penetrating radar signal carries discontinuous information about an electrical parameter of the underground space; determining, from multiple preset dip angles, a target dip angle of the ground penetrating radar signal with respect to each of multiple channels to be scanned, by a target scanning algorithm; separating the ground penetrating radar signal according to the target dip angle, to obtain a scattered wave; performing velocity continuation analysis on the scattered wave, to obtain a focusing velocity of the scattered wave; and imaging the scattered wave according to the scattered wave and the focusing velocity, to obtain an imaging result, where the imaging result is used to determine distribution information of the discontinuous body in the predefined underground space.

公开(公告)号：US20180231652A1

公开(公告)日：2018-08-16

申请号：US15689273

申请日：2017-08-29

Applicant: UHNDER, INC.

Inventor： Raghunath K. Rao ,  Curtis Davis ,  Monier Maher ,  Steve Borho ,  Nikhilesh Bhagat ,  Jean P. Bordes

IPC: G01S13/34 ,  G01S13/90 ,  G01S13/38 ,  G01S7/41 ,  G01S7/40 ,  G01S13/10 ,  G01S13/522

CPC classification number: G01S13/34 ,  G01S7/288 ,  G01S7/2921 ,  G01S7/354 ,  G01S7/4004 ,  G01S7/415 ,  G01S13/10 ,  G01S13/288 ,  G01S13/325 ,  G01S13/38 ,  G01S13/522 ,  G01S13/582 ,  G01S13/584 ,  G01S13/9011 ,  G01S13/931 ,  G01S2007/2883 ,  G01S2007/356 ,  G01S2013/9375 ,  G01S2013/9378

Abstract: A radar sensing system for a vehicle includes a transmitter configured for installation and use on a vehicle and able to transmit radio signals. The radar sensing system also includes a receiver and a processor. The receiver is configured for installation and use on the vehicle and is able to receive radio signals that include transmitted radio signals reflected from objects in the environment. The processor samples the received radio signals to produce a sampled stream. The processor processes the sampled stream such that the sampled stream is correlated with various delayed versions of a baseband signal. The correlations are used to determine an improved range, velocity, and angle of targets in the environment.

公开(公告)号：US20170242116A1

公开(公告)日：2017-08-24

申请号：US15431508

申请日：2017-02-13

Applicant: Panasonic Corporation

Inventor： TAKAAKI KISHIGAMI

IPC: G01S13/58 ,  G01S7/292

CPC classification number: G01S13/581 ,  G01S7/2925 ,  G01S13/284 ,  G01S13/931 ,  G01S2007/2883 ,  G01S2007/2886

Abstract: A radar apparatus includes a radar transmitter and a radar receiver. The radar receiver includes sampling circuitry, correlation calculation circuitry, a plurality of adder circuitry, a plurality of Doppler frequency analysis circuitry and Doppler frequency correction circuitry. The Doppler frequency correction circuitry, which in operation, (i) determines whether or not a folding in a Doppler frequency included in a reflected wave signal is present according to an amplitude difference or phase difference between two of peak spectra of results of analyses performed by the plurality of Doppler frequency analysis circuitry, and (ii) makes a correction to the Doppler frequency included in a reflected wave signal on the basis of the results of the analyses in a case it is determined that the folding is present.

公开(公告)号：US20170160380A1

公开(公告)日：2017-06-08

申请号：US14962092

申请日：2015-12-08

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： JAMES F. SEARCY ,  ALEBEL HASSEN ARAGE ,  STEPHEN W. ALLAND ,  SIYANG CAO

IPC: G01S7/32 ,  H04B7/04

CPC classification number: G01S13/288 ,  G01S7/038 ,  G01S7/2921 ,  G01S13/42 ,  G01S13/931 ,  G01S2007/2883 ,  H04B7/0413

Abstract: A Pseudo-Random Phase Modulation (PRPM) multiple-input-multiple-output (MIMO) radar system suitable for use on an automated vehicle includes a first transmit-antenna that transmits a first transmit-signal generated by a first PRPM-code, a second transmit-antenna that transmits a second transmit-signal generated by a second PRPM-code, a receive-antenna used to detect a first reflected-signal arising from the first transmit-signal and a second reflected-signal arising from the second transmit-signal, and a controller. The controller is in communication with the receive-antenna and is operable to generate the first PRPM-code and the second PRPM-code. The controller is configured to generate a first sub-channel-output based on a down-converted-signal from the receive-antenna and the first PRPM-code, generate a second sub-channel-output based on the down-converted-signal from the receive-antenna and the second PRPM-code, determine a first residue-signal based on the second sub-channel-output, and determine a first residue-removed-signal by subtracting the first residue-signal from the first sub-channel-output.

公开(公告)号：US20160018512A1

公开(公告)日：2016-01-21

申请号：US14773255

申请日：2013-11-05

Applicant: WUHAN UNIVERSITY

Inventor： Biyang WEN ,  Jian TAN ,  Ke LI ,  Yingwei TIAN ,  Caijun WANG

IPC: G01S7/282 ,  G01S7/288

CPC classification number: G01S7/282 ,  G01S7/288 ,  G01S13/282 ,  G01S2007/2883

Abstract: 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.

Abstract translation: 基于降低时频域上信号功率密度的思想，提出了一种生成和压缩多扫频雷达信号的方法。 通过使用周期性地移位和叠加单个扫频信号的方法，产生在时间和频率下同时多路复用的扫频信号，并且对于所生成的多扫频频率信号，扫频频率信号在时间上同时多路复用 和单脉冲时间段的频率。 频率多路复用的多扫频信号用于执行匹配滤波，然后执行分段累加，以获得与单个扫频频率信号压缩之后的带宽和信噪比成反比的距离分辨率 在相同的能量条件下，从而实现多次扫频频率信号的二次压缩。 该方法产生的信号具有较高的频谱利用率和较低的拦截概率，保证雷达的距离分辨率和检测距离。

公开(公告)号：US20140375491A1

公开(公告)日：2014-12-25

申请号：US13922249

申请日：2013-06-20

Applicant: Infineon Technologies AG

Inventor： Andre' ROGER ,  Romain YGNACE

IPC: G01S13/02

CPC classification number: G01S7/2927 ,  G01S7/288 ,  G01S7/2922 ,  G01S7/354 ,  G01S13/343 ,  G01S13/931 ,  G01S2007/028 ,  G01S2007/2883 ,  G01S2007/356

Abstract: An embodiment relates to a method for processing radar signals. The radar signals may include digitized data received by at least two radar antennas. The method may include determining CFAR results on FFT results based on data received by a first antenna, and applying the CFAR results to FFT results based on data received by a second antenna.

Abstract translation: 实施例涉及一种用于处理雷达信号的方法。 雷达信号可以包括由至少两个雷达天线接收的数字化数据。 该方法可以包括基于由第一天线接收的数据来确定FFT结果上的CFAR结果，以及基于由第二天线接收的数据将CFAR结果应用于FFT结果。

公开(公告)号：US20100315284A1

公开(公告)日：2010-12-16

申请号：US12868912

申请日：2010-08-26

Applicant: Dennis B. Trizna

Inventor： Dennis B. Trizna

IPC: G01S13/08

CPC classification number: G01S13/282 ,  G01S7/18 ,  G01S13/582 ,  G01S13/951 ,  G01S2007/2883 ,  G01S2007/2886 ,  Y02A90/18

Abstract: A method and apparatus of determining a wave height directional spectrum of an ocean wave field using the intermediate-frequency (IF) signal from marine radars with a rotating antenna, using either a fully coherent or a standard non-coherent transmitter/receiver modified for coherent-on-receive use. The method may include receiving the IF radar ocean surface echo signal for a series of transmit pulses, at a sequence of azimuthal antenna positions, and a number of antenna rotations covering several minutes, then generating a matrix of complex IF signal samples from these, deriving phases for each sample, generating the difference in phase for consecutive azimuths, then Doppler shifts, and finally radial velocities. These are interpolated to a Cartesian-transformed representation cube of samples, a subset of which is Fourier transformed in three dimensions, filtered, and the resulting power spectrum generated is used to derive ocean wave height directional spectra, frequency spectra, and root-mean-squared wave height.

Abstract translation: 一种使用来自具有旋转天线的海洋雷达的中频（IF）信号来确定海洋波场的波高方向谱的方法和装置，所述方法和装置使用完全相干或为相干修改的标准非相干发射机/接收机 - 接受使用。 该方法可以包括在方位天线位置序列处接收用于一系列发射脉冲的IF雷达海洋表面回波信号和覆盖几分钟的多个天线旋转，然后从其产生复数IF信号样本的矩阵，导出 每个样本的相位，产生连续方位角的相位差，然后产生多普勒频移，最后产生径向速度。 这些被内插到样本的笛卡尔变换表示立方体，其子集被三维傅立叶变换，滤波，并且所产生的功率谱被用于导出海浪高度方向谱，频谱和根平均值， 平方波高。

公开(公告)号：US20100225524A1

公开(公告)日：2010-09-09

申请号：US12716046

申请日：2010-03-02

Applicant: Wieslaw Jerzy SZAJNOWSKI

Inventor： Wieslaw Jerzy SZAJNOWSKI

IPC: G01S13/00 ,  G01R23/00

CPC classification number: G01R23/02 ,  G01S7/35 ,  G01S13/34 ,  G01S13/931 ,  G01S2007/2883

Abstract: A method of processing an input signal to perform frequency analysis is disclosed. The input signal comprises a desired signal and an interference signal. A crosslation is performed to generate a representation of the frequency content of the input signal. The representation comprises initial crosslation values predominantly corresponding to interference and subsequent crosslation values corresponding to the desired signal. For the crosslation values corresponding to interference, a maximum value and slope are calculated. These are used as parameter indicators of the interference and also to identify which values should be discarded in the processing of the desired signal. With the crosslation values corresponding to interference discarded, the remaining crosslation values are processed to calculate properties of the desired signal.

Abstract translation: 公开了一种处理输入信号进行频率分析的方法。 输入信号包括所需信号和干扰信号。 执行交叉关联以产生输入信号的频率内容的表示。 该表示包括主要对应于对应于期望信号的干扰和随后的交叉值的初始交叉值。 对于与干扰相对应的交叉值，计算最大值和斜率。 这些被用作干扰的参数指示符，并且还用于识别在处理所需信号中哪些值应被丢弃。 利用对应于被丢弃的干扰的交叉值，处理剩余的交叉值以计算期望信号的特性。

公开(公告)号：US20100194626A1

公开(公告)日：2010-08-05

申请号：US12675939

申请日：2008-09-01

Applicant: Franz-Xaver Hofele

Inventor： Franz-Xaver Hofele

IPC: G01S13/00

CPC classification number: G01S13/288 ,  G01S2007/2883

Abstract: In a method for adaptive calculation of pulse compression filter coefficients for a received signal in a radar installation, which received signal is evaluated with the aid of a complex pulse compression mismatch filter, a pulse compression filter coefficient set h(t) is calculated for an ideal theoretical received signal s(t) for a pulse compression mismatch filter, such that a pulse compression output signal results with a desired main lobe to side lobe ratio. A transformed set of pulse compression filter coefficients Hopt(f) for the complex pulse compression mismatch filter Hopt(f) is calculated for a distorted received signal using the following rule: H opt  ( f ) = S  ( f ) · H  ( f ) · S v *  ( f )  S v  ( f )  2 where S(f): the Fourier-transform of an undistorted received signal s(t), Sv(f): the Fourier-transform of a distorted received signal sv(t), sv*(f): the complex conjugate of Sv(f), H(f): the Fourier-transform of the pulse compression mismatch filter h(t).

Abstract translation: 在雷达装置的接收信号的脉冲压缩滤波器系数的自适应计算方法中，借助于复数脉冲压缩不匹配滤波器对接收到的信号进行评估，计算脉冲压缩滤波器系数集合h（t） 用于脉冲压缩失配滤波器的理想理想接收信号s（t），使得脉冲压缩输出信号具有期望的主瓣到旁瓣比。 使用以下规则，针对失真的接收信号计算复数脉冲压缩失配滤波器Hopt（f）的经变换的脉冲压缩滤波器系数Hopt（f）：H opt（f）= S（f）·H （f）·S v *（f）νS（f）her 2其中S（f）：未失真接收信号s（t）的傅里叶变换，Sv（f）：傅里叶变换 失真的接收信号sv（t），sv *（f）：Sv（f），H（f）的复共轭：脉冲压缩失配滤波器h（t）的傅立叶变换。

公开(公告)号：US20090237292A1

公开(公告)日：2009-09-24

申请号：US12390603

申请日：2009-02-23

Applicant: Recep Firat Tigrek ,  Wilhelmus Johannes De Heij

Inventor： Recep Firat Tigrek ,  Wilhelmus Johannes De Heij

IPC: G01S13/58

CPC classification number: H04L27/2601 ,  G01S13/24 ,  G01S13/28 ,  G01S13/582 ,  G01S2007/2883 ,  H04L27/2607

Abstract: An embodiment of the invention includes a step of transmitting an OFDM waveform including several frequency carrier signals transmitted simultaneously, the frequency carrier signals being coded in order to improve the Doppler response. An embodiment of the invention includes a step of receiving the echoed waveform from the target. The initial phase of each frequency carrier signal is recovered from the echoed waveform. The recovered initial phase of each frequency carrier signal is cyclically shifted in order to compensate for the Doppler effect and subsequently decoded. A compressed pulse is synthesized from the decoded initial phases.

Abstract translation: 本发明的实施例包括发送包括同时发送的多个频率载波信号的OFDM波形的步骤，频率载波信号被编码以便改善多普勒响应。 本发明的实施例包括从目标接收回波波形的步骤。 每个频率载波信号的初始相位从回波波形中恢复。 每个频率载波信号的恢复的初始相位被循环移位，以便补偿多普勒效应并随后解码。 从解码的初始相位合成压缩脉冲。