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：US07495605B1

公开(公告)日：2009-02-24

申请号：US11497033

申请日：2006-07-31

申请人： Mai Sakamoto ,  Kazuma Natsume ,  Yasuyuki Miyake

发明人： Mai Sakamoto ,  Kazuma Natsume ,  Yasuyuki Miyake

IPC分类号： G01S13/08

CPC分类号： G01S3/74 ,  G01S7/35 ,  G01S13/34 ,  G01S13/345 ,  G01S13/42 ,  G01S13/48

摘要： A radar apparatus includes a receiving means that receives a reflected signal, a beat signal generation means that generates beat signals based on the reflected signal, a correlation matrix generation means that calculates correlation matrices based on the beat signals, a storing means that stores previous correlation matrices, an addition means that calculates addition correlation matrices by adding the correlation matrices to the previous correlation matrices, a detection means that detects a frequency component satisfying a predetermined condition by using the beat signals, an extraction means that extracts an extraction matrix corresponding to the detected frequency from the addition correlation matrices, and a direction calculation means that calculates a direction of the object with respect to the radar apparatus based on the extraction matrix.

摘要翻译： 雷达装置包括接收反射信号的接收装置，基于反射信号产生拍频信号的拍子信号产生装置，基于拍子信号计算相关矩阵的相关矩阵生成装置，存储先前相关的存储装置 矩阵，加法装置，通过将相关矩阵与先前的相关矩阵相加来计算加法相关矩阵;检测装置，通过使用拍子信号来检测满足预定条件的频率分量;提取装置，提取对应于 来自加法相关矩阵的检测频率;以及方向计算装置，其基于提取矩阵来计算相对于雷达装置的对象的方向。

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：US07339518B2

公开(公告)日：2008-03-04

申请号：US11351502

申请日：2006-02-10

申请人： Kazuma Natsume ,  Yuu Watanabe

发明人： Kazuma Natsume ,  Yuu Watanabe

IPC分类号： G01S13/42 ,  G01S13/93

CPC分类号： G01S7/36 ,  G01S7/023 ,  G01S13/345 ,  G01S13/931 ,  G01S2007/356 ,  G01S2013/9325 ,  G01S2013/9375

摘要： An FMCW radar device executes a frequency analysis for a beat signal in a frequency increase interval and a frequency decrease interval, to obtain frequency components in a predetermined high frequency range exceeding a frequency range corresponding to a target detection frequency range within which a target object for detection should be detected. Then the FMCW radar device calculates a value related to a sum of intensities of frequency components within the high frequency range respectively for each of the frequency increase interval and the frequency decrease interval. In the case that one of the calculated integrals is larger than a threshold, the FMCW radar device determines that the FMCW radar device is interfered with by a nearby radar device.

摘要翻译： FMCW雷达装置对频率增加间隔和频率下降间隔中的差拍信号进行频率分析，以获得超过与目标检测频率范围对应的频率范围的预定高频范围内的频率分量，在该频率范围内， 应检测检测。 然后，FMCW雷达装置分别针对频率增加间隔和频率下降间隔中的每个频率分量计算与高频范围内的频率分量的强度之和相关的值。 在计算的积分中的一个大于阈值的情况下，FMCW雷达装置确定FMCW雷达装置被附近的雷达装置干扰。

公开(公告)号：US20070018886A1

公开(公告)日：2007-01-25

申请号：US11403995

申请日：2006-04-13

申请人： Yuu Watanabe ,  Kazuma Natsume

发明人： Yuu Watanabe ,  Kazuma Natsume

IPC分类号： G01S7/40 ,  G01S7/35 ,  G01S13/34

CPC分类号： G01S13/345 ,  G01S7/023 ,  G01S13/931

摘要： Occurrence of interference is detected using sampled amplitude data obtained by oversampling a beat signal. It is detected by comparing the absolute value (|VD|) of variation in the sampled data with a threshold value (TH). When interference occurs, a wideband signal is superposed on the beat signal, and this disturbs the signal waveform of the beat signal to drastically varies its amplitude. Therefore, occurrence of interference can be detected without fail regardless of the scheme on which a radar as the source of an interference wave is based and even when the amplitude of the interference wave is low. In addition, when low-frequency noise is superposed on the beat signal, erroneous detection of occurrence of interference can be prevented.

摘要翻译： 使用通过过采样拍频信号获得的采样振幅数据来检测干扰的发生。 通过将采样数据的变化的绝对值（| VD |）与阈值（TH）进行比较来检测。 当发生干扰时，宽带信号叠加在节拍信号上，这样会扰乱拍频信号的信号波形，从而大大改变其幅度。 因此，即使干扰波的幅度低，雷达作为干扰波的来源，即使是干扰波源也是可以的，所以能够毫无疑问地检测出干扰的发生。 此外，当低频噪声叠加在节拍信号上时，可以防止发生干扰的错误检测。

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。