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公开(公告)号：US5323162A
公开(公告)日：1994-06-21
申请号：US125589
申请日：1993-09-23
CPC分类号： G01S13/9029 , G01S13/28
摘要： A synthetic aperture radar system is mounted in a moving platform. The synthetic aperture radar system includes a multi-beam antenna having a plurality of reception beams different in direction from one another, the multi-beam antenna being adapted to receive radar echoes from objects. The width of each of the reception beams is selected such that the band width of a Doppler shift contained in the radar echo of a moving object is broader than that of a Doppler shift contained in the radar echo of a stationary object. The radar echo is pulse compressed to improve the range resolution before the frequency thereof is shifted such that the center frequency of the Doppler shift due to the velocity of the moving platform becomes zero. After the frequency shifting, the radar echo is filtered to separate the radar echoes of the moving and stationary objects from each other. The radar echoes of the moving and stationary objects are respectively subjected to Fourier transform with respect to the distance between the moving platform and the objects. The spectrum of the radar echo from the moving object is further shifted such that the center frequency of the Doppler shift due to the velocity of the object becomes zero. These reception, pulse compression, frequency shift and Fourier transform are executed for each reception beam. The spectrums in the radar echoes of the moving and stationary objects are respectively synthesized for all the reception beams. After the synthesization, the spectrums are respectively multiplied by a reference spectrum in the complex manner. The results of the multiplication are respectively inverse transformed from the spectrums.
摘要翻译： 合成孔径雷达系统安装在移动平台上。 合成孔径雷达系统包括具有彼此不同的多个接收波束的多波束天线，多波束天线适于从物体接收雷达回波。 选择每个接收光束的宽度，使得包含在移动物体的雷达回波中的多普勒频移的带宽比包含在静止物体的雷达回波中的多普勒频移宽。 雷达回波被脉冲压缩，以在频率偏移之前提高范围分辨率，使得由于移动平台的速度而导致的多普勒频移的中心频率变为零。 频移后，对雷达回波进行滤波，将运动和静止物体的雷达回波相互分离。 运动和静止物体的雷达回波分别相对于移动平台和物体之间的距离进行傅里叶变换。 来自运动物体的雷达回波的频谱被进一步移位，使得由于对象的速度引起的多普勒频移的中心频率变为零。 对每个接收波束执行这些接收，脉冲压缩，频移和傅里叶变换。 移动和静止物体的雷达回波中的频谱分别为所有接收波束合成。 在合成之后，将光谱分别以复杂的方式乘以参考光谱。 乘法的结果分别从频谱中逆变换。
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2.发明授权Stabilizing method of synthetic aperture radar and position determining method thereof 失效合成孔径雷达的稳定方法及其位置确定方法
公开(公告)号：US5495248A
公开(公告)日：1996-02-27
申请号：US153675
申请日：1993-11-16
申请人： Masatoshi Kawase , Seiichi Maeda , Takahiko Fujisaka , Yoshimasa Oh-Hashi , Michimasa Kondo , Natsuki Kondo
发明人： Masatoshi Kawase , Seiichi Maeda , Takahiko Fujisaka , Yoshimasa Oh-Hashi , Michimasa Kondo , Natsuki Kondo
CPC分类号： G01S13/876 , G01S13/90 , G01S13/74 , G01S13/9035
摘要： A stabilizing method of a synthetic aperture radar and a position determining method by the radar. At least three repeaters are arranged in mutually different positions on the ground or the sea and a radio frequency signal having a predetermined frequency is transmitted from the radar mounted on a radar platform such as an aircraft to the repeaters. Each repeater frequency-modulates and amplifies the received signal to return the signal to the radar. The radar receives the signal returned from each repeater. The radar calculates a distance between the radar platform and each repeater on the basis of a time required for the transmitting and the receiving and phase information of the received signal. When the position of each repeater is known, by using the positions of the repeaters and the calculated distances, the position of the radar platform can be calculated. On the basis of the obtained position of the radar platform, a reference signal for phase compensation is generated. The radar eliminates a phase variation of a reflected wave received from an object to be acquired by multiplying the reflected wave by the reference signal for phase compensation.
摘要翻译： 一种合成孔径雷达的稳定方法和雷达的位置确定方法。 至少三个中继器布置在地面或大海上相互不同的位置，并且具有预定频率的射频信号从安装在诸如飞行器的雷达平台上的雷达发射到中继器。 每个中继器对接收的信号进行频率调制和放大，以将信号返回到雷达。 雷达接收从每个中继器返回的信号。 雷达根据接收信号的发送和接收所需的时间和相位信息，计算雷达平台与每个中继器之间的距离。 当每个中继器的位置已知时，通过使用中继器的位置和计算的距离，可以计算雷达平台的位置。 在获得的雷达平台位置的基础上，生成相位补偿的参考信号。 雷达通过将反射波乘以基准信号进行相位补偿，消除了从要获取的物体接收的反射波的相位变化。
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公开(公告)号：US5087917A
公开(公告)日：1992-02-11
申请号：US584157
申请日：1990-09-18
摘要： A radar system having a phased array antenna for transmission and a digital beam forming antenna for reception for observing a plurality of targets by transmitting transmission pulses to the respective targets comprises a subtraction control circuit, a transmission timing control circuit and a transmission beam direction control circuit. The substraction control circuit calculates a required number of transmission pulses (beams) to be transmitted for each of transmission cycles in accordance with detected Doppler frequencies of the targets, so as not to cause ambiguity on the detected Doppler frequencies, and determines a beam direction for each of transmission beams. The timing control circuit and beam direction control circuit control transmission timing and direction of the beams.
摘要翻译： 具有用于传输的相控阵天线的雷达系统和用于通过向各个目标发送传输脉冲来观察多个目标的用于接收的数字波束形成天线包括减法控制电路，发送定时控制电路和发送波束方向控制电路 。 减法控制电路根据检测到的目标多普勒频率，计算要发送的每个发送周期的发送脉冲（波束）的数量，以便不会对检测到的多普勒频率造成歧义，并且确定波束方向 每个传输光束。 定时控制电路和光束方向控制电路控制光束的传输定时和方向。
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4.发明授权Moving target identifying system in a base station radar unit for specifying information about moving targets carrying a mobile station radar unit 失效基站雷达单元中的移动目标识别系统，用于指定携带移动台雷达单元的移动目标的信息
公开(公告)号：US5594447A
公开(公告)日：1997-01-14
申请号：US457614
申请日：1995-06-01
IPC分类号： G01S7/288 , G01S7/41 , G01S13/42 , G01S13/48 , G01S13/76 , G01S13/78 , G01S13/86 , G01S13/91 , G01S13/92 , G01S13/93 , G07B15/06
CPC分类号： G07B15/063 , G01S13/765 , G01S13/91 , G01S13/92 , G01S13/42 , G01S13/48 , G01S13/78 , G01S13/867 , G01S13/931 , G01S2007/2883 , G01S2013/9353 , G01S2013/936 , G01S7/412
摘要： A vehicle ID radar system has a simple construction and obtains high identifying performance by making a general identification based on a plurality of responses. There are provided an antenna for obtaining a plurality of question signals from a base station radar unit, a receiver for processing the signals received from the antenna, a question code demodulator for demodulating question codes from the received signals, a question code decoder for decoding the question codes and reading responses respectively corresponding to the plurality of questions from a plurality of data bases, a response code generator for generating response signals, and a transmitter for modulating the response signals and supplying them to the antenna.
摘要翻译： 车辆ID雷达系统具有简单的结构，并且通过基于多个响应进行通用识别来获得高识别性能。 提供了一种用于从基站雷达单元获得多个问题信号的天线，用于处理从天线接收的信号的接收机，用于从接收到的信号中解调问题码的问题码解调器，用于解码 分别对应于来自多个数据库的多个问题的问题代码和读取响应，用于产生响应信号的响应代码发生器和用于调制响应信号并将其提供给天线的发送器。
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公开(公告)号：US4656479A
公开(公告)日：1987-04-07
申请号：US690938
申请日：1985-01-14
摘要： A radar system for finding the location of a second flying object from a first flying object, comprises a nondirectional antenna for radiating a first radio wave from the first flying object, a second nondirectional antenna provided on the second flying object to receive the first radio wave and to radiate a second radio wave generated by modulating the received first radio wave and an array antenna provided on the first flying object to receive the second radio wave. The respective amplitudes of the signals given by the antenna elements of the array antenna are compared individually with a specified level and an operation for determining the direction of arrival of the second radio wave is executed using the signals given by all the antenna elements when either of the amplitudes of the signals given by the antenna elements is greater than the specified level.
摘要翻译： 用于从第一飞行物体找到第二飞行物体的位置的雷达系统包括用于辐射来自第一飞行物体的第一无线电波的非定向天线，设置在第二飞行物体上的第二无方位天线，以接收第一无线电波 并辐射通过调制所接收的第一无线电波产生的第二无线电波和设置在第一飞行物体上的阵列天线以接收第二无线电波。 由阵列天线的天线元件给出的信号的相应幅度被单独地与指定电平进行比较，并且使用由所有天线元件给出的信号来执行用于确定第二无线电波的到达方向的操作， 由天线元件给出的信号的振幅大于指定的电平。
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公开(公告)号：US5457462A
公开(公告)日：1995-10-10
申请号：US279941
申请日：1994-07-25
IPC分类号： G01S7/292 , G01S7/32 , G01S13/524 , G01S7/288
CPC分类号： G01S13/5246 , G01S7/2926
摘要： A radar signal processor for use in a pulse radar system. Reception signals are given from a range divide and output circuit to a plurality of integration point variable coherent integrators, each of which is allocated to a different range domain. The range domain is given to an integration point setting section provided corresponding to each integration point variable coherent integrator. The integration point setting section determines the number of coherent integration points based on the given range domain and sets it in the corresponding integration point variable coherent integrator. The signal resulting from coherent integration by the integration point variable coherent integrator is discriminated to frequencies, then supplied to any square detector for square detection for each frequency component. Square detection output is fed into a CFAR detector, which then makes its false alarm rate constant for a supply to a display, etc.
摘要翻译： 用于脉冲雷达系统的雷达信号处理器。 接收信号从范围分频和输出电路被给予多个积分点可变相干积分器，每个积分点被分配给不同的范围域。 范围域被赋予与每个积分点可变相干积分器对应的集成点设置部分。 积分点设置部分基于给定的范围域确定相干积分点的数量，并将其设置在相应的积分点可变相干积分器中。 由积分点可变相干积分器的相干积分产生的信号被鉴别为频率，然后提供给任何平方检波器，用于每个频率分量的平方检测。 方波检测输出送入CFAR检测器，然后使其误报率保持恒定，供给显示器等。
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公开(公告)号：US4947176A
公开(公告)日：1990-08-07
申请号：US363490
申请日：1989-06-08
CPC分类号： G01S3/74 , G01S13/48 , H01Q21/0025 , H01Q25/00
摘要： A multiple-beam antenna system capable of forming a plurality of beams at one time in different directions. The antenna system has a plurality of element antennas arranged in a predetermined configuration. A signal received by each element antenna is converted to a digital signal which in turn is subjected to a Fourier transform. The Fourier-transformed receiving signal is multiplied with a Fourier-transformed weighting function. The resultant product is subjected to an inverse Fourier transform to be used for calculating an antenna radiation pattern. A holographic multiple-beam antenna is also disclosed.
摘要翻译： 能够在不同方向一次形成多个光束的多光束天线系统。 天线系统具有以预定配置布置的多个元件天线。 由每个元件天线接收的信号被转换成数字信号，数字信号又进行傅立叶变换。 傅立叶变换接收信号与傅里叶变换加权函数相乘。 对所得产物进行逆傅里叶变换，以用于计算天线辐射图。 还公开了全息多波束天线。
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公开(公告)号：US4472718A
公开(公告)日：1984-09-18
申请号：US308171
申请日：1981-10-02
CPC分类号： G01S13/42
摘要： A tracking radar system which includes a variable frequency oscillator for supplying to a vertical antenna array an oscillation frequency which is changed for each of a number of pulses transmitted from the antenna array. The antenna array transmits an electric wave toward a target at a low altitude and receives an echo from the target. An electronic computer estimates an elevation angle of the target from the echo received by the antenna array according to array aperture sampling technique for each pulse. An averaging circuit averages those estimated elevation angles of the target to provide its elevation angle. Alternatively, the oscillation frequency may change for each of finite time intervals.
摘要翻译： 一种跟踪雷达系统，其包括可变频率振荡器，用于向垂直天线阵列提供对从天线阵列发送的多个脉冲中的每一个发生改变的振荡频率。 天线阵列向低空的目标发射电波并从目标接收回波。 电子计算机根据每个脉冲的阵列孔径采样技术估计由天线阵列接收的回波的目标的仰角。 平均电路平均目标的估计仰角以提供其仰角。 或者，振荡频率可以针对每个有限时间间隔而改变。
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公开(公告)号：US5432885A
公开(公告)日：1995-07-11
申请号：US950166
申请日：1992-09-24
申请人： Kohei Nomoto , Michimasa Kondo
发明人： Kohei Nomoto , Michimasa Kondo
CPC分类号： G06N7/023 , G05B13/0275 , Y10S706/90 , Y10S706/906
摘要： A fuzzy inference apparatus in which a new membership function is synthesized from a current, weighted membership function and a previously synthesized membership function fed back from a previous operation and in which a new inference value is derived from the newly-synthesized membership function. The apparatus also includes, in one embodiment, weighting apparatus for weighting the previously synthesized membership function according to the degree of response of a selected process characteristic of the process in relation to the previously synthesized membership function.
摘要翻译： 一种模糊推理装置，其中从当前加权隶属函数和从先前操作反馈的先前合成的隶属函数合成新的隶属函数，并且从新合成的隶属函数导出新的推理值。 在一个实施例中，装置还包括加权装置，用于根据与先前合成的隶属函数相关的所选过程特征的响应程度对先前合成的隶属函数进行加权。
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公开(公告)号：US5649106A
公开(公告)日：1997-07-15
申请号：US641947
申请日：1996-05-02
申请人： Shingo Tsujimichi , Michimasa Kondo
发明人： Shingo Tsujimichi , Michimasa Kondo
IPC分类号： G06F15/173 , G06F15/16 , G06F15/163 , G06F17/00
CPC分类号： G06F15/173
摘要： A parallel computer having a plurality of cluster buses 2 which are connected to the processor (PE) 1 via the selectors 6. The selectors 6 maintain the same condition until the next instruction is received. In this system, the clusters 11 are reconstructed at appropriate timing during the operation of the processor, thus allowing the number of processors PEs in a cluster to be exchanged in response to variation in the process load allocated to each cluster 11. Accordingly, the resources of the computer are used more effectively. The execution environment of each process may be independent. Real time execution of each process can be assured.
摘要翻译： 具有经由选择器6连接到处理器（PE）1的多个集群总线2的并行计算机。选择器6保持相同的条件，直到接收到下一条指令。 在该系统中，在处理器的操作期间，在适当的定时重构簇11，从而允许响应于分配给每个簇11的处理负载的变化来交换簇中的处理器PE的数量。因此，资源 的计算机被更有效地使用。 每个进程的执行环境可以是独立的。 可以确保每个过程的实时执行。
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