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公开(公告)号：US09829576B2
公开(公告)日：2017-11-28
申请号：US14836198
申请日：2015-08-26
发明人： Masahiro Minowa , Yasunobu Asada
IPC分类号： G01S13/52 , G01S13/524 , G01S7/28 , G01S7/292 , G01S13/538 , G01S13/95 , G01S7/288
CPC分类号： G01S13/524 , G01S7/2806 , G01S7/2923 , G01S13/538 , G01S13/951 , G01S13/956 , G01S2007/2886 , Y02A90/18
摘要： A clutter suppressing device for suppressing echo data of reflection waves caused by radar transmission signals reflecting on a static object is provided. Each of the radar transmission signals is transmitted at a predetermined azimuth from a radar antenna at a predetermined time interval. The clutter suppressing device includes an echo data memory configured to sequentially store a plurality of echo data of reflection waves caused by the radar transmission signals reflecting on objects, a filter configured to select, from the plurality of echo data, a data row in the azimuth direction for a predetermined distance, and suppress, in the data row, echo data of a target object moving at a speed within a predetermined range, and a suppression echo data output unit configured to output suppression echo data containing the echo data suppressed by the filter.
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公开(公告)号：US09746549B1
公开(公告)日：2017-08-29
申请号：US14329768
申请日：2014-07-11
申请人： Altera Corporation
发明人： Michael Alan Parker
IPC分类号： G01S7/292 , G01S13/02 , G01S13/524 , G01S13/53 , G01S13/532 , G01S7/35 , G01S13/50 , G01S13/534
CPC分类号： G01S13/5246 , G01S7/292 , G01S7/2922 , G01S7/2927 , G01S7/354 , G01S13/50 , G01S13/5244 , G01S13/53 , G01S13/532 , G01S13/534 , G01S2007/2886
摘要： Integrated circuits may include a constant false alarm rate (CFAR) detection circuit, which may identify targets among clutter and noise in a range-Doppler map. The CFAR detection circuit may compute power values for each cell in the range-Doppler map and scan the range-Doppler map cell by cell. For this purpose, the CFAR detection circuit may compute a target value for a cell-under-test and surrounding cells and a noise value for one or more regions in local proximity of the cell-under-test on the range-Doppler map. For example, the CFAR detection circuit may perform a two-dimensional filtering to compute the target value and compute a sum of accumulated power values weighted by predetermined coefficients. The predetermined coefficients may taper at edges of the range-Doppler map and/or at edges of the regions. The CFAR detection circuit may declare a target based on a comparison of the target value and noise value.
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公开(公告)号：US09448303B2
公开(公告)日：2016-09-20
申请号：US14122175
申请日：2012-05-25
IPC分类号： G01S13/08 , G01S13/06 , G01S13/28 , G01S13/02 , G01S13/87 , G01S7/02 , G01S7/28 , G01S7/42 , G01S13/42 , G01S13/00 , G01S7/288
CPC分类号： G01S13/06 , G01S7/023 , G01S7/28 , G01S7/42 , G01S13/003 , G01S13/02 , G01S13/284 , G01S13/288 , G01S13/42 , G01S13/878 , G01S2007/2886
摘要： A first radar transmitter and a second radar transmitter transmit a first modulation signal and a second modulation signal which are generated by repeating a predetermined time of code sequences, each of which has a predetermined code length, using a first code width and a second code width, respectively. An A/D converter converts the modulation signal into a discrete signal in a sampling cycle shorter than a difference between the first code width and the second code width. A positioning section separates a plurality of reception signals using a first correlation value based on outputs from the A/D converter and a first delay section corresponding to the first code width and a second correlation value based on outputs from the A/D converter and a second delay section corresponding to the second code width.
摘要翻译： 第一雷达发射机和第二雷达发射机通过使用第一码宽度和第二码宽度重复预定时间的码序列而产生的第一调制信号和第二调制信号，第一调制信号和第二调制信号 ， 分别。 A / D转换器将调制信号以比第一代码宽度和第二代码宽度之间的差小的采样周期将该调制信号转换成离散信号。 定位部分基于来自A / D转换器的输出的第一相关值和基于来自A / D转换器的输出的第一代码宽度和第二相关值的第一延迟部分分离多个接收信号，以及 第二延迟部分对应于第二代码宽度。
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公开(公告)号：US09297888B2
公开(公告)日：2016-03-29
申请号：US14637263
申请日：2015-03-03
申请人： Robert W. Lee
发明人： Robert W. Lee
CPC分类号： G01S7/41 , G01S7/2926 , G01S13/524 , G01S13/582 , G01S13/95 , G01S2007/2886 , Y02A90/18
摘要： A method may include generating for transmission a repeating sequence of N constant-frequency pulses of width t seconds at interpulse intervals of T seconds, with each pulse in the sequence having a particular constant phase according to a quadratic phase sequence, which phase is applied to each pulse in a first sense of modulation. The method may further include modulating the phase of echo energy received from one or more objects reflecting the transmitted repeating sequence of N constant-frequency pulses with a second sense of modulation opposite to the first sense of modulation. The method may further include producing from the modulated received echo energy N unique and discrete frequency translations of the received echo energy as a function of range r of the reflecting objects, of magnitude equal to multiples of 1/NT Hz, which may preserve the spectrum of the received echo energy, forming in combination a composite signal frequency spectrum.
摘要翻译： 一种方法可以包括在T秒的脉冲间隔处产生用于传输宽度为t秒的N个恒定频率脉冲的重复序列的序列，其中序列中的每个脉冲根据二次相序具有特定的恒定相位，该相位被施加到 每个脉冲处于第一调制方式。 该方法还可以包括调制从一个或多个物体接收到的回波能量的相位，反映所发射的N个恒定频率脉冲的重复序列，其中第二调制方式与第一调制方式相反。 该方法还可以包括从被调制的接收的回波能量N产生作为反射对象的范围r的函数的所接收的回波能量的唯一和离散频率变换，其幅度等于1 / NTHz的倍数，其可以保留频谱 的接收回波能量，组合形成复合信号频谱。
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公开(公告)号：US20150369903A1
公开(公告)日：2015-12-24
申请号：US14767295
申请日：2013-02-12
申请人： Akbar GHAZINOUR , Bernhard DEHLINK
发明人： AKBAR GHAZINOUR , BERNHARD DEHLINK
IPC分类号： G01S7/285
CPC分类号： G01S7/285 , G01S2007/2886
摘要： An active I/Q generator circuit comprises an input node for receiving a reference oscillation signal. The circuit has an I-output and a Q-output for respectively outputting an I-signal and a Q-signal. A first active component is electrically coupled to the input node and arranged to amplify the reference oscillation signal and to output an amplified reference oscillation signal. A second active component is electrically coupled to the first active component to receive the amplified reference oscillation signal. The second active component is arranged to generate, based on the amplified reference oscillation signal, an in-phase signal and a, with respect to the in-phase signal, phase shifted signal, the second active component electrically coupled to the in-phase signal output for providing the in-phase signal and electrically coupled to the quadrature-phase output for providing the phase-shifted signal.
摘要翻译： 有源I / Q发生器电路包括用于接收参考振荡信号的输入节点。 电路具有分别输出I信号和Q信号的I输出和Q输出。 第一有源分量电耦合到输入节点并且被布置成放大参考振荡信号并输出放大的参考振荡信号。 第二有源分量电耦合到第一有源分量以接收放大的参考振荡信号。 第二有源分量被布置成基于放大的参考振荡信号产生同相信号，并且相对于同相信号产生相移信号，第二有源分量电耦合到同相信号 输出，用于提供同相信号并电耦合到正交相输出以提供相移信号。
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公开(公告)号：US20150341203A1
公开(公告)日：2015-11-26
申请号：US14702235
申请日：2015-05-01
发明人： TADASHI MORITA , TAKAAKI KISHIGAMI , NAOYA YOSOKU
CPC分类号： H04L27/3863 , G01S7/282 , G01S7/288 , G01S7/2921 , G01S13/288 , G01S2007/2886 , H04J13/0014 , H04L27/205
摘要： A transmission system is provided with a pulse sequence generator that generates a pulse sequence including Golay code or Spano code, a π/2-BPSK modulator that applies π/2-BPSK modulation to the pulse sequence generated by the pulse sequence generator, and a phase rotator that provides phase rotation for every pulse for output of the π/2-BPSK modulator and a reception system is provided with a phase rotator that provides a phase opposite to a phase provided by the phase rotator of the transmission system and a correlator that performs correlation calculation for output of the phase rotator, based on the output of the π/2-BPSK modulator.
摘要翻译： 传输系统具有脉冲序列发生器，该脉冲序列发生器产生包括格雷码或Spano码的脉冲序列，对由脉冲序列发生器产生的脉冲序列应用＆amp; 2-BPSK调制的＆amp; 2-BPSK调制器， 以及相位旋转器，其为每个脉冲提供相位旋转以输出＆pgr / 2-BPSK调制器，并且接收系统设置有相位旋转器，其提供与由传输系统的相位旋转器提供的相位相反的相位， 基于＆pgr / 2-BPSK调制器的输出执行相位旋转器的输出的相关计算的相关器。
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公开(公告)号：US20150309167A1
公开(公告)日：2015-10-29
申请号：US14647060
申请日：2014-06-19
发明人： Maiko Shikatani , Asako Hamada , Takaaki Kishigami
CPC分类号： G01S13/04 , G01S7/285 , G01S7/288 , G01S13/18 , G01S13/26 , G01S13/42 , G01S13/56 , G01S13/582 , G01S13/589 , G01S13/62 , G01S13/723 , G01S2007/2886
摘要： A radar transmitter (Tx) transmits a radio-frequency radar transmission signal from a transmission antenna (Tx_ant1). An antenna branch processor (D1) receives a reflection signal produced by reflection, by an object, of the radar transmission signal by a reception antenna (Rx-ant1) and calculates correlation between the reflection signal and the radar transmission signal. An object detection processor (10) detects presence or absence of an object by using, based on (Tp+1) outputs of the antenna branch processor (D1), where Tp is an integer, amplitude differences between an amplitude of a (Tp+1)-th output of the antenna branch processor (D1) and amplitudes of first to Tp-th outputs of the antenna branch processor (D1).
摘要翻译： 雷达发射机（Tx）从发射天线（Tx_ant1）发射射频雷达传输信号。 天线分支处理器（D1）通过接收天线（Rx-ant1）接收由物体反射雷达发射信号产生的反射信号，并计算反射信号与雷达发射信号之间的相关性。 目标检测处理器（10）通过使用（Tp + 1）天线分支处理器（D1）的输出（Tp为整数）来检测物体的存在或不存在，（Tp + 天线分支处理器（D1）的第1输出和天线分支处理器（D1）的第一至第Tp输出的幅度。
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公开(公告)号：US20140327567A1
公开(公告)日：2014-11-06
申请号：US14360285
申请日：2012-11-30
发明人： Takaaki Kishigami , Hirohito Mukai
CPC分类号： G01S13/06 , G01S13/02 , G01S13/22 , G01S13/284 , G01S13/91 , G01S2007/2886 , G08G1/056
摘要： Each antenna system processor performs coherent integration on a prescribed number of correlation values between a reception signal and a transmission code. A correlation matrix generator generates a correlation matrix on the basis of coherent integration values. A distance estimator estimates a distance to a target. A direction vector storage is stored with direction vectors each of which includes an azimuth component with respect to a target and an elevation angle component of a line connecting a transmission antenna and the target in which a prescribed direction is used as a reference. An incoming direction estimator estimates a signal incoming direction from the target using the correlation matrix and the direction vectors in which the elevation angle component range is restricted on the basis of the distance to the target.
摘要翻译： 每个天线系统处理器在接收信号和传输码之间的规定数量的相关值上执行相干积分。 相关矩阵发生器基于相干积分值生成相关矩阵。 距离估计器估计到目标的距离。 存储方向矢量存储方向矢量，每个方向矢量包括相对于目标的方位分量和连接发射天线的线和使用规定方向的目标的线的仰角分量作为参考。 输入方向估计器使用相关矩阵和基于到目标的距离来限制仰角分量范围的方向矢量来估计来自目标的信号输入方向。
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公开(公告)号：US20140204981A1
公开(公告)日：2014-07-24
申请号：US14235351
申请日：2012-07-27
IPC分类号： H04B1/707
CPC分类号： H04B1/707 , G01S7/032 , G01S7/282 , G01S13/0209 , G01S13/284 , G01S2007/2886 , H03B28/00 , H03D2200/0019 , H03K5/1534 , H04B1/7172 , H04B1/7174 , H04L27/0004
摘要： The method for operating a UWB device having at least one transmitting antenna and/or at least one receiving antenna comprises the following steps: controlling the transmitting antenna (12) or the receiving antenna (12′) with a control pulse signal (13,13′) having a sequence of substantially sinusoidal pulses of alternating polarity and differing amplitudes and particularly having the waveform of a fifth-order Gaussian pulse signal, wherein the transmitting antenna (12) can be alternately supplied with current pulses of differing polarity and differing magnitude by switching on and off first electronic switch units (16) that are coupled to the transmitting antenna (12) and have resistances associated with the amplitudes of the pulses to be generated, wherein each first switch unit (16) has a specifiable, particularly equal, number of first switching transistors (18,19), each having substantially identical on-state resistance values (R), wherein the resistance of a first switch unit is adjusted either by using only one of the first switching transistors (18,19) or by using a plurality of first switching transistors (18,19) connected in parallel, and wherein the first switch units (16) are controlled sequentially according to a specifiable temporal schema and each for a control time interval of a predetermined length.
摘要翻译： 用于操作具有至少一个发射天线和/或至少一个接收天线的UWB设备的方法包括以下步骤：利用控制脉冲信号（13,13）来控制发射天线（12）或接收天线（12'） '）具有交替极性和不同幅度的基本正弦波脉冲序列，并且特别地具有五阶高斯脉冲信号的波形，其中发射天线（12）可以交替地被提供具有不同极性和不同幅度的电流脉冲，由 打开和关闭耦合到所述发射天线（12）并且具有与要产生的脉冲的振幅相关联的电阻的第一电子开关单元（16），其中每个第一开关单元（16）具有可指定的，特别相等的， 第一开关晶体管（18,19）的数量，每个具有基本上相同的导通电阻值（R），其中第一开关单元 通过仅使用第一开关晶体管（18,19）中的一个或通过并联连接的多个第一开关晶体管（18,19）进行调整，并且其中第一开关单元（16）根据 可指定的时间模式，并且每个用于预定长度的控制时间间隔。
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公开(公告)号：US20140168004A1
公开(公告)日：2014-06-19
申请号：US13850308
申请日：2013-03-26
发明人： I-Shan Chen , Trsung-Fu Hsu , Cheng-Hsiung Hsu , Hsin-Lung Hsiao
CPC分类号： G01S13/284 , G01S7/282 , G01S13/103 , G01S13/282 , G01S13/931 , G01S2007/2886
摘要： A radar system comprises a transmitting device comprising a reference frequency source, for generating a reference frequency signal; a direct-digital synthesizer, coupled to the reference frequency source, for generating a synthesized frequency signal according to the reference frequency signal; a phase lock loop, coupled to the direct-digital synthesizer, for converting the synthesized frequency signal to an output signal; a transmitting antenna, coupled to the phase lock loop, for emitting the output signal to the air; and a loop switch module, coupled to the phase lock loop, for switching the phase lock loop between an open loop mode and a closed loop mode; and at least one receiving device, for receiving at least one wireless signal, and processing the at least one wireless signal according to the output signal generated by the phase lock loop.
摘要翻译： 雷达系统包括：发射装置，包括用于产生参考频率信号的参考频率源; 耦合到参考频率源的直接数字合成器，用于根据参考频率信号产生合成频率信号; 耦合到直接数字合成器的锁相环，用于将合成频率信号转换为输出信号; 耦合到锁相环的发射天线，用于向空气发射输出信号; 以及耦合到锁相环的环路开关模块，用于在开环模式和闭环模式之间切换锁相环; 以及用于接收至少一个无线信号的至少一个接收设备，以及根据由所述锁相环产生的输出信号来处理所述至少一个无线信号。
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