公开(公告)号：US20060109168A1

公开(公告)日：2006-05-25

申请号：US10519642

申请日：2003-06-10

申请人： Motoi Nakanishi ,  Toru Ishii ,  Tetsu Nishimura

发明人： Motoi Nakanishi ,  Toru Ishii ,  Tetsu Nishimura

IPC分类号： G01S13/42

CPC分类号： G01S13/06 ,  G01S3/16 ,  G01S13/345 ,  G01S13/426 ,  G01S13/584 ,  G01S13/931

摘要： A radar can detect target azimuths located outside and adjacent to a scanning angular range of a beam determining changes in received signal strength (a signal-strength profile) in the azimuthal direction as a function of a beam azimuth in a predetermined scanning angular range, and estimating the target azimuth causing the signal-strength profile from the signal-strength profile, which is a portion of a convex located adjacent to the outermost angle in the scanning angular range. For example, the target azimuth is estimated by a ratio between the received signal strength at the outermost angle of about 10.0° and the received signal strength at about 9.5°, which is one beam inside the outermost position.

摘要翻译： 雷达可以检测位于光束的扫描角度范围外并与扫描角度范围相邻的目标方位角，确定方位角方向上的接收信号强度（信号强度分布）的变化，作为预定扫描角度范围内的波束方位角的函数，以及 估计从信号强度分布中引起信号强度分布的目标方位角，该信号强度分布是位于与扫描角度范围内的最外角相邻的凸部的一部分。 例如，目标方位通过在最外角度约10.0°处的接收信号强度与在最外侧位置处的一束之间的约9.5°处的接收信号强度之间的比率来估计。

公开(公告)号：US06825797B2

公开(公告)日：2004-11-30

申请号：US10388531

申请日：2003-03-17

申请人： Toru Ishii ,  Motoi Nakanishi ,  Tetsu Nishimura

发明人： Toru Ishii ,  Motoi Nakanishi ,  Tetsu Nishimura

IPC分类号： G01S1300

CPC分类号： G01S7/4008 ,  G01S13/345 ,  G01S13/42 ,  G01S13/584 ,  G01S13/931

摘要： A radar system achieves adjustment of a time-change characteristic of a frequency-modulating voltage signal to a voltage-controlled oscillator for determining a transmitting signal such that the time-change characteristic of the frequency-modulating voltage signal is changed by a minute amount and the frequency spectrum of a beat signal is determined. The adjustment is performed so that the shape of a bulge in signal intensity included in the frequency spectrum is the sharpest.

摘要翻译： 雷达系统实现将调频电压信号的时变特性调整到压控振荡器，以确定发射信号，使频率调制电压信号的时变特性变化微小量， 确定拍频信号的频谱。 执行调整，使得包括在频谱中的信号强度的凸起形状是最尖锐的。

公开(公告)号：US07034743B2

公开(公告)日：2006-04-25

申请号：US10516924

申请日：2003-05-22

申请人： Motoi Nakanishi ,  Toru Ishii ,  Tetsu Nishimura

发明人： Motoi Nakanishi ,  Toru Ishii ,  Tetsu Nishimura

IPC分类号： G01S13/34 ,  G01S13/93

CPC分类号： G01S7/354 ,  G01S13/345 ,  G01S13/42 ,  G01S13/584 ,  G01S13/931 ,  G01S2007/356 ,  G01S2013/9353

摘要： An FM-CW radar detects at least one of the relative distance and the relative speed of a predetermined object based on the frequencies of projection portions observed in the frequency spectrums of beat signals in an ascending-modulation section and a descending-modulation section, where the projection portions are generated by one and the same object. The radar determines the moving speed of a predetermined moving object such as a vehicle or the like having the radar mounted thereon, and the frequency difference between the projection portions observed in the frequency spectrums of the beat signals in the ascending-modulation section and the descending-modulation section is inversely calculated, where the frequency difference corresponds to the stationary object, and a predetermined pair corresponding to the frequency difference is extracted on a priority basis.

摘要翻译： FM-CW雷达基于在上行调制部分和下行调制部分中的拍频信号的频谱中观察到的投影部分的频率来检测预定对象的相对距离和相对速度中的至少一个，其中 突出部分由同一个物体产生。 雷达确定安装有雷达的车辆等预定移动物体的移动速度，以及上升调制部中的拍频信号的频谱中观察到的投射部之间的频率差， 调制部分被反算，其中频差对应于静止对象，并且基于优先级提取对应于频差的预定对。

公开(公告)号：US06753805B2

公开(公告)日：2004-06-22

申请号：US10310807

申请日：2002-12-06

申请人： Motoi Nakanishi ,  Toru Ishii ,  Tetsu Nishimura

发明人： Motoi Nakanishi ,  Toru Ishii ,  Tetsu Nishimura

IPC分类号： G01S1334

CPC分类号： G01S13/42 ,  G01S7/35 ,  G01S13/34 ,  G01S13/345 ,  G01S13/426 ,  G01S13/584 ,  G01S13/931 ,  G01S2013/936

摘要： In an FM-CW radar system, regarding peaks appearing in the frequency spectrum of a beat signal in an FM-CW radar, groups of consecutive peaks in beam bearings within a predetermined frequency difference are regarded as being caused by reflected waves from a single target, and based on a combination of a peak group in an up-modulating interval and a peak group in a down-modulating interval, a relative distance to a target and its relative speed are determined.

摘要翻译： 在FM-CW雷达系统中，关于出现在FM-CW雷达中的节拍信号的频谱中的峰值，在预定频率差内的波束轴承中的连续波峰组被认为是由来自单个目标的反射波引起的 ，并且基于上调制间隔中的峰值组和下调制间隔中的峰值组的组合，确定与目标的相对距离及其相对速度。

公开(公告)号：US06686870B2

公开(公告)日：2004-02-03

申请号：US10356476

申请日：2003-02-03

申请人： Tetsu Nishimura ,  Motoi Nakanishi ,  Toru Ishii

发明人： Tetsu Nishimura ,  Motoi Nakanishi ,  Toru Ishii

IPC分类号： G01S728

CPC分类号： G01R23/14 ,  G01S7/354 ,  G01S13/345 ,  G01S13/42 ,  G01S13/584 ,  G01S13/931 ,  G01S2007/356

摘要： A radar device precisely detects a target in short time intervals by detecting a true peak frequency with high accuracy via a calculation which does not require a large amount of computation. A discrete frequency spectrum of a beat signal multiplied by a window function is determined, and values of signal strength at two discrete frequencies which are, respectively, higher and lower than a peak frequency of the discrete frequency spectrum of the beat signal and which are adjacent to the peak frequency. The frequency difference between the discrete peak frequency of the beat signal and the peak frequency of the window function is then determined from the ratio between the values of signal strength at those two discrete frequencies adjacent to the peak frequency. Thus, the true peak frequency of the beat signal is determined with a high frequency resolution.

摘要翻译： 雷达装置通过不需要大量计算的计算，以高精度检测真正的峰值频率，以短时间间隔精确地检测目标。 确定乘以窗口函数的拍频信号的离散频谱，以及两个离散频率处的信号强度值，分别高于和低于拍频信号的离散频谱的峰值频率并且相邻的频率 到峰值频率。 然后，从与峰值频率相邻的那两个离散频率处的信号强度的值之间的比率确定差拍信号的离散峰值频率与窗口函数的峰值频率之间的频率差。 因此，以高频分辨率确定拍频信号的真峰值频率。

公开(公告)号：US06856278B2

公开(公告)日：2005-02-15

申请号：US10334898

申请日：2003-01-02

申请人： Motoi Nakanishi ,  Toru Ishii ,  Tetsu Nishimura

发明人： Motoi Nakanishi ,  Toru Ishii ,  Tetsu Nishimura

IPC分类号： B60R21/00 ,  G01S7/292 ,  G01S13/34 ,  G01S13/42 ,  G01S13/58 ,  G01S13/93 ,  G08G1/16 ,  G01S13/32

CPC分类号： G01S13/426 ,  G01S13/345 ,  G01S13/584 ,  G01S13/931

摘要： A radar performs accurate and appropriate pairing even if peaks of approximately identical signal intensities or even if a plurality of peak groups having identical representative beam bearings exist in the frequency spectrum. First, the peak frequency of a peak which appears in the frequency spectrum is determined for each of an up-modulating interval and a down-modulating interval in predetermined beam bearings, and signal-intensity profiles in the beam bearings are extracted with regard to a plurality of beam portions which are adjacent to the beam bearings. Next, the correlation level between the signal-intensity profiles at the up-modulating interval and the down-modulating interval is determined, and pairing is performed in sequence starting from the profiles having a higher correlation level.

摘要翻译： 即使在频谱中存在大致相同信号强度的峰值，或者即使在频谱中存在具有相同的代表性波束轴承的多个峰组，雷达也执行准确和适当的配对。 首先，对于预定的波束轴承中的上调制间隔和下调制间隔中的每一个，确定出现在频谱中的峰值的峰值频率，并且关于a轴提取梁轴承中的信号强度分布 与梁轴承相邻的多个梁部分。 接下来，确定在上调制间隔和下调制间隔处的信号强度分布之间的相关电平，并且从具有较高相关电平的分布开始依次执行配对。

公开(公告)号：US06756933B2

公开(公告)日：2004-06-29

申请号：US10300583

申请日：2002-11-21

申请人： Toru Ishii ,  Motoi Nakanishi ,  Tetsu Nishimura

发明人： Toru Ishii ,  Motoi Nakanishi ,  Tetsu Nishimura

IPC分类号： G01S740

CPC分类号： G01S7/4008 ,  G01S13/345 ,  G01S13/42 ,  G01S13/584 ,  G01S13/931

摘要： A radar system and a characteristic adjustment method for the radar system are provided, in which a control voltage waveform of a voltage controlled oscillator for frequency-modulating a sending signal can be set in a short time without increasing the required amount of memory. In adjusting time-varying characteristics of a voltage signal for frequency modulation on a voltage controlled oscillator determining a sending frequency, the time-varying characteristics of the voltage signal for frequency modulation are adjusted to optimize a form of a protrusion in signal intensity included in a frequency spectrum of a beat signal.

摘要翻译： 提供一种用于雷达系统的雷达系统和特征调整方法，其中可以在短时间内设置用于频率调制发送信号的压控振荡器的控制电压波形，而不增加所需的存储量。 在调整用于频率调制的电压信号的时变特性来确定发送频率时，调整用于频率调制的电压信号的时变特性以优化信号强度中包括的信号强度的形式 拍频信号的频谱。

公开(公告)号：US06707416B2

公开(公告)日：2004-03-16

申请号：US10359720

申请日：2003-02-07

申请人： Toru Ishii ,  Tetsu Nishimura ,  Motoi Nakanishi

发明人： Toru Ishii ,  Tetsu Nishimura ,  Motoi Nakanishi

IPC分类号： G01S728

CPC分类号： G01S13/931 ,  G01S7/003 ,  G01S13/345 ,  G01S13/42 ,  G01S13/584

摘要： A radar system is capable of transmitting necessary information through a very small amount of data from a radar device to a host device via a bus with a limited bandwidth. A radar sensor generates a beat signal between a transmission signal and a reflected signal from a target. A signal processor determines a spectrum of the beat signal and compresses the data indicating the spectrum. The resultant compressed data is transmitted to the host device via a bus. The host device decompresses the received data thereby reproducing the spectrum data. The host device then detects the target on the basis of the reproduced spectrum data.

摘要翻译： 雷达系统能够通过具有有限带宽的总线从雷达装置通过非常少量的数据传送必要的信息到主机设备。 雷达传感器在发射信号和来自目标的反射信号之间产生拍频信号。 信号处理器确定拍频信号的频谱并压缩指示频谱的数据。 所得到的压缩数据通过总线传输到主机设备。 主机设备解压接收的数据，从而再现频谱数据。 然后主机设备基于再现的频谱数据检测目标。

公开(公告)号：US07230565B2

公开(公告)日：2007-06-12

申请号：US10519642

申请日：2003-06-10

申请人： Motoi Nakanishi ,  Toru Ishii ,  Tetsu Nishimura

发明人： Motoi Nakanishi ,  Toru Ishii ,  Tetsu Nishimura

IPC分类号： G01S13/42

CPC分类号： G01S13/06 ,  G01S3/16 ,  G01S13/345 ,  G01S13/426 ,  G01S13/584 ,  G01S13/931

摘要： A radar can detect target azimuths located outside and adjacent to a scanning angular range of a beam by determining changes in received signal strength (a signal-strength profile) in the azimuthal direction as a function of a beam azimuth in a predetermined scanning angular range, and estimating the target azimuth causing the signal-strength profile from the signal-strength profile, which is portion of a convex located adjacent to the outermost angle in the scanning angular range. For example, the target azimuth is estimated by a ratio between the received signal strength at the outermost angle of about 10.0° and the received signal strength at about 9.5°, which is one beam inside the outermost position.

摘要翻译： 雷达可以通过在方位角方向上确定作为预定扫描角度范围内的波束方位角的函数的接收信号强度（信号强度分布）的变化来检测位于波束的扫描角度范围外部并与波束的扫描角度范围相邻的目标方位角， 并且从信号强度分布估计导致信号强度分布的目标方位角，所述信号强度分布是位于与扫描角度范围内的最外角相邻的凸部的一部分。 例如，目标方位通过在最外角度约10.0°处的接收信号强度与在最外侧位置处的一束之间的约9.5°处的接收信号强度之间的比率来估计。

公开(公告)号：US06795012B2

公开(公告)日：2004-09-21

申请号：US10157660

申请日：2002-05-29

申请人： Motoi Nakanishi ,  Toru Ishii ,  Tetsu Nishimura

发明人： Motoi Nakanishi ,  Toru Ishii ,  Tetsu Nishimura

IPC分类号： G01S1393

CPC分类号： G01S13/345 ,  G01S7/352 ,  G01S13/584 ,  G01S13/931 ,  G01S2007/356

摘要： In a radar, a coupler extracts a part of a transmission signal as a local signal and a mixer mixes a reception signal from a circulator and the local signal so as to output an intermediate frequency signal which is the frequency difference between the transmission signal and the reception signal. An IF-amplifying circuit amplifies the intermediate frequency signal and an AD converter converts the signal to digital data. A DC-removing unit removes a DC component by subtracting the average from the data and an FFT operation unit performs fast Fourier transform so that the distance to a target and the relative velocity of the target are calculated based on a peak included in the frequency spectrum.

摘要翻译： 在雷达中，耦合器提取发送信号的一部分作为本地信号，并且混合器将来自循环器的接收信号与本地信号混合，以便输出作为发送信号和发送信号之间的频率差的中频信号 接收信号。 IF放大电路放大中频信号，AD转换器将信号转换为数字数据。 直流去除单元通过从数据中减去平均值来除去直流分量，并且FFT运算单元进行快速傅立叶变换，从而基于包括在频谱中的峰值来计算与目标的距离和目标的相对速度 。