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 。

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：US20050174282A1

公开(公告)日：2005-08-11

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： G01S7/02 ,  G01S7/35 ,  G01S13/34 ,  G01S13/42 ,  G01S13/58 ,  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：US06674395B2

公开(公告)日：2004-01-06

申请号：US10345962

申请日：2003-01-17

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： G01S7/4008 ,  G01S13/345 ,  G01S13/42 ,  G01S13/584 ,  G01S13/931

摘要： A radar system includes a transmitting/receiving unit, having a voltage controlled oscillator, for repeatedly transmitting a triangular transmission signal including a frequency-gradually-rising up-modulation interval and a frequency-gradually-dropping down-modulation interval and for receiving a reception signal including a reflected signal from a target, a frequency analysis unit, a data storing unit for storing time-varying characteristics of input values to a D/A converter that monotonically change an oscillation frequency of the voltage controlled oscillator with time, in the form of data concerning an expression representing the time-varying characteristics, and a data processing unit for determining the input values to the D/A converter with reference to the data. At least one of the relative distance to the target and the relative speed of the target is detected based on a beat signal during the up-modulation interval and the beat signal during the down-modulation interval.

摘要翻译： 一种雷达系统包括具有压控振荡器的发射/接收单元，用于重复发射包括频率逐渐升高的上调调制间隔和逐渐下降的下降调制间隔的三角形发送信号，并用于接收接收 信号，其包括来自目标的反射信号，频率分析单元，数据存储单元，用于将输入值的时变特性存储到D / A转换器，其以时间形式单调地改变压控振荡器的振荡频率，形式 关于表示时变特性的表达式的数据;以及数据处理单元，用于参考数据确定D / A转换器的输入值。 基于在上调制间隔期间的搏动信号和下调制间隔期间的拍频信号来检测与目标的相对距离和目标的相对速度中的至少一个。

公开(公告)号：US06597307B2

公开(公告)日：2003-07-22

申请号：US10066940

申请日：2002-02-04

申请人： Motoi Nakanishi ,  Toru Ishii ,  Ikuo Takakuwa ,  Tetsu Nishimura

发明人： Motoi Nakanishi ,  Toru Ishii ,  Ikuo Takakuwa ,  Tetsu Nishimura

IPC分类号： G01S1393

CPC分类号： G01S13/931 ,  G01S7/412 ,  G01S13/34 ,  G01S13/42

摘要： By changing the direction of a detection radio-wave beam within a detection-angle range and by detecting reflected-signal intensities, wherein each of the reflected-signal intensities is detected for each predetermined unit angle, moving averages of the reflected-signal intensities are calculated by using an angular width predetermined for a given distance as an average width. Thus, data of a reflected-signal-intensity distribution is obtained. Accordingly, the direction of a target is detected by finding the direction of the highest reflected-signal intensity.