公开(公告)号：US07271761B2

公开(公告)日：2007-09-18

申请号：US10690843

申请日：2003-10-23

申请人： Kazuma Natsume ,  Hiroshi Hazumi

发明人： Kazuma Natsume ,  Hiroshi Hazumi

IPC分类号： G01S13/34 ,  G01S13/93

CPC分类号： G01S13/34 ,  G01S13/343 ,  G01S13/931 ,  G01S2013/9321 ,  G01S2013/9325 ,  G01S2013/9346

摘要： In a system, a frequency-modulating unit is configured to frequency-modulate a radar wave signal within a predetermined frequency modulation range from bottom to top so that a frequency of the frequency-modulated radar wave changes in time. The rate of frequency change of the radar wave signal in time is set to F0/Tf. The F0 represents a center frequency in the frequency modulation range. The Tf represents the predetermined constant time. A mixing unit is configured to mix the transmitted frequency-modulated radar wave signal and the reflection signal to obtain a beat signal. The beat signal is based on a frequency difference between a frequency of the transmitted radar wave signal and that of the reflection signal. A sweeping unit is configured to sweep the beat signal within the frequency modulation range from one of the bottom and the top to the other thereof to obtain a frequency component of the beat signal. An obtaining unit is configured to obtain the prediction distance based on a relationship between the frequency component of the beat signal and the prediction distance.

摘要翻译： 在一个系统中，频率调制单元被配置为在从下到上的预定频率调制范围内对雷达波信号进行频率调制，使得调频雷达波的频率随时间而变化。 雷达波信号在时间上的频率变化率设定为F0 / Tf。 F0表示频率调制范围内的中心频率。 Tf表示预定的恒定时间。 混合单元被配置为混合发射的调频雷达波信号和反射信号以获得拍频信号。 拍频信号基于发射的雷达波信号的频率与反射信号的频率之间的频率差。 扫描单元被配置为在频率调制范围内扫描从底部和顶部之一到另一个的频率信号，以获得拍频信号的频率分量。 获取单元被配置为基于拍子信号的频率分量与预测距离之间的关系来获得预测距离。

公开(公告)号：US06924762B2

公开(公告)日：2005-08-02

申请号：US10844600

申请日：2004-05-13

申请人： Yasuyuki Miyake ,  Kazuma Natsume

发明人： Yasuyuki Miyake ,  Kazuma Natsume

IPC分类号： G01S7/02 ,  G01S13/34 ,  G01S13/44 ,  G01S13/50 ,  G01S13/58 ,  G01S13/60 ,  G01S13/93 ,  G01S13/42

CPC分类号： G01S13/4454 ,  G01S13/34 ,  G01S13/584 ,  G01S13/931 ,  G01S2013/9321 ,  G01S2013/9353

摘要： A radar is provided which transmits a radar wave whose frequency is so modulated as to rise, fall, and be kept constant cyclically. The radar uses beat signals produced by the radar wave and radar echoes received by two antennas to produce radar data on a target. When it is impossible to pair frequency peaks of the beat signals in a modulated frequency-rising and -falling ranges, the radar determines that the frequency peaks have arisen from different objects so that they overlap each other and uses frequency peaks of the beat signals in a constant modulated frequency range to acquire the radar data.

摘要翻译： 提供雷达，其发射频率被调制为上升，下降的雷达波，并且周期性地保持恒定。 该雷达使用由雷达波产生的拍频信号和由两个天线接收的雷达回波，以在目标上产生雷达数据。 当不可能将拍频信号的频率峰值配置在调制的上升和下降范围内时，雷达确定频率峰值从不同的对象产生，使得它们彼此重叠，并使用频率峰值 一个恒定的调制频率范围来获取雷达数据。

公开(公告)号：US20120256784A1

公开(公告)日：2012-10-11

申请号：US13441110

申请日：2012-04-06

申请人： Kento Nakabayashi ,  Kazuma Natsume

发明人： Kento Nakabayashi ,  Kazuma Natsume

IPC分类号： G01S13/00

CPC分类号： G01S7/032 ,  G01S13/4463 ,  G01S13/931 ,  G01S2013/9375 ,  H01Q3/26 ,  H01Q21/0093 ,  H01Q21/065

摘要： In an antenna apparatus, a transmitting antenna includes transmitting-side unit antennas arranged in an arranging-direction at transmitting-side arrangement intervals. Receiving antennas are arranged in the arranging-direction at arrangement intervals. Each of the receiving antennas includes receiving-side unit antennas arranged in the arranging-direction at receiving-side arrangement intervals. The receiving-side arrangement interval is larger than the transmitting-side arrangement interval. A transmission-and reception composition characteristic, which is a composition of directivities of the transmitting antenna and receiving antenna, has a main lobe including a detection angle range. The transmitting-side arrangement interval and the receiving-side arrangement interval are determined so that, in the detection angle range, a ratio of the intensity of the main lobe of the transmission-and-reception composition characteristic at a given angle in the detection angle range to the intensity of the transmission-and-reception composition characteristic generated as a false image at the angle by wrap around becomes not less than a threshold.

摘要翻译： 在天线装置中，发送天线包括发送侧单元天线，其以发送侧配置间隔排列在排列方向。 接收天线以布置间隔排列在排列方向上。 每个接收天线包括以接收侧布置间隔布置在排列方向上的接收侧单元天线。 接收侧配置间隔大于发送侧配置间隔。 作为发送天线和接收天线的方向性的组合的发送接收组合特性具有包括检测角范围的主瓣。 确定发送侧配置间隔和接收侧配置间隔，使得在检测角度范围内，发送接收组合特征的主瓣的强度与检测角度的给定角度的比率 作为通过包裹的角度产生的假图像的发送和接收合成特征的强度的范围变得不小于阈值。

公开(公告)号：US20120112955A1

公开(公告)日：2012-05-10

申请号：US13289077

申请日：2011-11-04

申请人： Takamasa Ando ,  Kazuma Natsume

发明人： Takamasa Ando ,  Kazuma Natsume

IPC分类号： G01S13/00

CPC分类号： G01S7/4056 ,  G01S7/352 ,  G01S13/345 ,  G01S13/931

摘要： A peak detecting threshold determining method is provided which determines a peak detecting threshold which is used by an FMCW radar in detecting a peak frequency component which appears as representing a target object in a frequency spectrum. A CW radar wave is transmitted to produce a CW noise spectrum. An offset is added to frequency components in a high-frequency region of the CW noise spectrum to define a first distribution as a value of the peak detecting threshold. This enables the value of the peak detecting threshold in the high-frequency region to be determined with high precision by reflecting a receiver noise containing a leakage noise.

摘要翻译： 提供了一种峰值检测阈值确定方法，其确定由FMCW雷达在检测表现为频谱中的目标对象的峰值频率分量时使用的峰值检测阈值。 传输CW雷达波以产生CW噪声谱。 将偏移量加到CW噪声频谱的高频区域中的频率分量中，以将第一分布定义为峰值检测阈值的值。 这使得通过反映包含泄漏噪声的接收机噪声，可以高精度地确定高频区域中的峰值检测阈值。

公开(公告)号：US20110298653A1

公开(公告)日：2011-12-08

申请号：US13153677

申请日：2011-06-06

申请人： Akiyoshi Mizutani ,  Kento Nakabayashi ,  Kazuma Natsume

发明人： Akiyoshi Mizutani ,  Kento Nakabayashi ,  Kazuma Natsume

IPC分类号： G01S13/02

CPC分类号： G01S13/32 ,  G01S3/74 ,  G01S13/48

摘要： A device for detecting an azimuth has a transmission array antenna having plural transmission antenna elements arrayed along an array axis and a receiving array antenna having plural receiving antenna elements arrayed along the array axis. A reception signal is acquired for each of channels by transmitting and receiving a search wave through each of the channels. The channels are arbitrary combinations of each of the transmission antenna elements and each of the receiving antenna elements. A first spatial frequency analysis is performed along the array axis of either ones of the transmission antenna elements and the receiving antenna elements using the reception signal. A second spatial frequency analysis is then performed along the array axis of the other ones of the antenna elements using results of the first spatial frequency analysis. An azimuth of a target is determined based on analysis results from the second spatial frequency analysis.

摘要翻译： 一种用于检测方位的装置具有发射阵列天线，具有沿着阵列轴排列的多个发射天线元件和具有沿阵列轴排列的多个接收天线元件的接收阵列天线。 通过每个信道发送和接收搜索波来为每个信道获取接收信号。 信道是每个发射天线元件和每个接收天线元件的任意组合。 使用接收信号，沿发射天线元件和接收天线元件的阵列轴进行第一空间频率分析。 然后使用第一空间频率分析的结果，沿其他天线元件的阵列轴执行第二空间频率分析。 基于来自第二空间频率分析的分析结果确定目标的方位角。

公开(公告)号：US20090309784A1

公开(公告)日：2009-12-17

申请号：US12456351

申请日：2009-06-16

申请人： Kazuma Natsume

发明人： Kazuma Natsume

IPC分类号： G01S13/00

CPC分类号： G01S13/426 ,  G01S3/74 ,  G01S2013/0263

摘要： A target object detection apparatus periodically executes a transmit/receive operation to transmit radar waves and obtain received signals from resultant incident reflected waves from respective target objects. An individual correlation matrix of received signal values is derived for each one of a fixed plurality of successive transmit/receive operations, with the transmission frequency being changed at successive operations. Individual correlation matrices derived from respective transmit/receive operations are time-averaged to obtain an average correlation matrix for use in obtaining target object information such as direction or velocity, with effects of correlation between respective incident waves being suppressed.

摘要翻译： 目标对象检测装置周期性地执行发送/接收操作以发送雷达波并从各个目标对象的合成入射反射波获得接收信号。 针对固定多个连续发送/接收操作中的每一个导出接收信号值的单个相关矩阵，其中传输频率在连续操作中改变。 从相应的发送/接收操作导出的各个相关矩阵是时间平均的，以获得用于获得诸如方向或速度的目标对象信息的平均相关矩阵，并且抑制了各个入射波之间的相关性的影响。

公开(公告)号：US07474253B2

公开(公告)日：2009-01-06

申请号：US11454175

申请日：2006-06-15

申请人： Kazuma Natsume

发明人： Kazuma Natsume

IPC分类号： G01S13/00

CPC分类号： B60W10/04 ,  B60R21/0134 ,  B60R2021/01259 ,  B60W10/184 ,  B60W30/09 ,  B60W30/16 ,  B60W40/04 ,  G01S13/34 ,  G01S13/931 ,  G01S2013/464 ,  G01S2013/9325 ,  G01S2013/9332 ,  G01S2013/9346 ,  G01S2013/935 ,  G01S2013/9353 ,  G01S2013/9375 ,  G08G1/166 ,  G08G1/167

摘要： A radar transceiver of an on-vehicle radar transmits and receives a radar wave. Objects ahead of a vehicle having the on-vehicle radar are sensed based on the reflected radar wave reflected from the objects. A target vehicle to be monitored is extracted from the sensed objects based on the reflected radar wave. Also, a blind spot object, which is present in a blind spot of the target vehicle is extracted from the sensed objects based on the reflected radar wave.

摘要翻译： 车载雷达的雷达收发器发射和接收雷达波。 基于从物体反射的反射雷达波，感测到具有车载雷达的车辆之前的物体。 基于反射的雷达波，从感测对象中提取要监视的目标车辆。 此外，基于反射的雷达波，从感测对象中提取存在于目标车辆的盲点中的盲点对象。

公开(公告)号：US20060284760A1

公开(公告)日：2006-12-21

申请号：US11454175

申请日：2006-06-15

申请人： Kazuma Natsume

发明人： Kazuma Natsume

IPC分类号： G01S13/93

CPC分类号： B60W10/04 ,  B60R21/0134 ,  B60R2021/01259 ,  B60W10/184 ,  B60W30/09 ,  B60W30/16 ,  B60W40/04 ,  G01S13/34 ,  G01S13/931 ,  G01S2013/464 ,  G01S2013/9325 ,  G01S2013/9332 ,  G01S2013/9346 ,  G01S2013/935 ,  G01S2013/9353 ,  G01S2013/9375 ,  G08G1/166 ,  G08G1/167

摘要： A radar transceiver of an on-vehicle radar transmits and receives a radar wave. Objects ahead of a vehicle having the on-vehicle radar are sensed based on the reflected radar wave reflected from the objects. A target vehicle to be monitored is extracted from the sensed objects based on the reflected radar wave. Also, a blind spot object, which is present in a blind spot of the target vehicle is extracted from the sensed objects based on the reflected radar wave.

公开(公告)号：US06646589B2

公开(公告)日：2003-11-11

申请号：US10241606

申请日：2002-09-12

申请人： Kazuma Natsume

发明人： Kazuma Natsume

IPC分类号： G01S1393

CPC分类号： G01S13/345 ,  G01S7/354 ,  G01S13/347 ,  G01S13/48 ,  G01S13/584 ,  G01S13/931 ,  G01S2007/356 ,  G01S2013/9321 ,  G01S2013/9375

摘要： An FMCW radar is provided which may be employed in automotive anti-collision or radar cruise control systems. In a distance measuring mode, only one of channels is used to sample a beat signal continuously, thereby allowing a sampling frequency to be increased up to Nc times that in an azimuth measuring mode and a sweep time in which a transmit signal sweeps in frequency upward and downward cyclically to be minimized. This causes half the sampling frequency to be higher than a frequency component arising sufficiently from a distant target present outside a preset radar range, thereby eliminating an error in detecting the distant target as being located inside the preset radar range.

摘要翻译： 提供了可用于汽车防碰撞或雷达巡航控制系统的FMCW雷达。 在距离测量模式中，仅使用一个通道连续采样拍频信号，从而允许采样频率增加到方位测量模式和扫频时间的Nc倍，其中发射信号频率向上扫描 并周期性地下降到最小。 这导致采样频率的一半高于从存在于预设雷达范围之外的遥远目标充分产生的频率分量，从而消除了将远距离目标检测为位于预设雷达范围内的误差。

公开(公告)号：US06339395B1

公开(公告)日：2002-01-15

申请号：US09538499

申请日：2000-03-30

申请人： Hiroshi Hazumi ,  Kazuma Natsume

发明人： Hiroshi Hazumi ,  Kazuma Natsume

IPC分类号： G01S1334

CPC分类号： G01S13/345 ,  G01S7/288 ,  G01S13/32 ,  G01S13/348 ,  G01S2007/2883 ,  G01S2013/9321

摘要： A radar apparatus is provided which is designed to form digital beams using beat signals each of which is produced by one of a plurality of receivers and analyze the frequency of the beat signals in units of the beams for obtaining data such as the distance to, relative speed, and azimuth of a target. The apparatus performs the complex Fourier Transform twice on beat signals in time series and space series along the array of receiving antennas to derive results of the frequency analysis in units of the beams, thereby resulting in simplified structure and decrease in operation load of the apparatus.

摘要翻译： 提供一种雷达装置，其被设计为使用每个由多个接收机之一产生的拍频信号形成数字波束，并以波束为单位分析拍频信号的频率，以获得诸如距离 速度和方位角。 该装置沿着接收天线阵列以时间序列和空间序列的拍子信号两次执行复数傅立叶变换，以得出以波束为单位的频率分析结果，从而导致装置的简化结构和操作负载的降低。