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92 条记录 (耗时 0.013 秒)

    System and method for spectral generation in radar
    81.
    发明授权
    System and method for spectral generation in radar 有权
    雷达光谱生成系统和方法

    公开(公告)号：US06822606B2

    公开(公告)日：2004-11-23

    申请号：US10383775

    申请日：2003-03-07

    申请人： Tony Ponsford ,  Reza Dizaji

    发明人： Tony Ponsford ,  Reza Dizaji

    IPC分类号： G01S1300

    CPC分类号： G01S7/2921 ,  G01S3/74 ,  G01S7/292 ,  G01S7/32 ,  G01S13/5244

    摘要： This invention relates to a spectral generator and a spectral generation method for receiving pre-processed range-doppler-sensor data and generating at least one noise-reduced high-resolution spectrum therefrom. The spectral generator comprises a window generator that generates a window which defines a plurality of range-doppler cells. The spectral generator further comprises a covariance matrix calculator that is in communication with the window generator to receive the range-doppler-sensor data within the window and calculate a covariance matrix estimate for a range-doppler cell of interest in the window. The spectral generator also includes a spectral calculator that is in communication with the covariance matrix calculator to calculate a high-resolution spectral vector based on a location matrix and a noise subspace matrix estimate.

    摘要翻译： 本发明涉及一种用于接收预处理的范围 - 多普勒传感器数据并从其产生至少一个噪声降低的高分辨率频谱的频谱发生器和频谱产生方法。 频谱发生器包括窗口发生器，其产生限定多个范围多普勒单元的窗口。 频谱发生器还包括与窗口发生器通信的协方差矩阵计算器，以在窗口内接收范围 - 多普勒传感器数据，并计算窗口中感兴趣的范围 - 多普勒单元的协方差矩阵估计。 频谱发生器还包括与协方差矩阵计算器通信的频谱计算器，以基于位置矩阵和噪声子空间矩阵估计来计算高分辨率频谱矢量。

    Pulse signal quantification device for secondary radar
    82.
    发明授权
    Pulse signal quantification device for secondary radar 失效
    二次雷达脉冲信号量化装置

    公开(公告)号：US4529984A

    公开(公告)日：1985-07-16

    申请号：US328269

    申请日：1981-12-07

    申请人： Claude Devolder ,  Gerard Gaultier

    发明人： Claude Devolder ,  Gerard Gaultier

    IPC分类号： G01S7/32 ,  G01S13/78 ,  H03K5/08 ,  G01S13/76

    CPC分类号： H03K5/082 ,  G01S13/784 ,  G01S7/32

    摘要： An electronic device is provided for quantifying video frequency pulse signals, comprising a first and a second signal-formation channel having a common input connected to a source of input signals and outputs connected to a level comparator with two output states; the ratio of the gains and the DC level difference of said first and second channels having predetermined values; the first channel comprising a delay circuit provided with substantially equidstant taps which are connected respectively to the inputs of an "OR" type linear operator, the output of this operator being connected to a first input of a summing circuit whose second input is connected to a DC voltage source, the second channel comprising essentially a delay circuit.

    摘要翻译： 提供一种用于量化视频脉冲信号的电子设备，包括具有连接到输入信号源的公共输入的第一信号形成通道和连接到具有两个输出状态的电平比较器的输出的第二信号形成通道; 所述第一和第二信道的增益和DC电平差的比例具有预定值; 所述第一通道包括延迟电路，该延迟电路具有分别连接到“或”型线性运算器的输入端的基本上相等的抽头，该运算器的输出端连接到求和电路的第一输入端，其第二输入端连接到 DC电压源，第二通道基本上包括延迟电路。

    Angle/vector processed, phase-accumulated single vector rotation, variable order adaptive MTI processor
    83.
    发明授权
    Angle/vector processed, phase-accumulated single vector rotation, variable order adaptive MTI processor 失效
    角度/向量处理，相位累积单向量旋转，可变顺序自适应MTI处理器

    公开(公告)号：US4137533A

    公开(公告)日：1979-01-30

    申请号：US841279

    申请日：1977-10-12

    申请人： George T. Briechle ,  John A. Di Domizio ,  Frederik Weindling

    发明人： George T. Briechle ,  John A. Di Domizio ,  Frederik Weindling

    IPC分类号： G01S7/32 ,  G01S13/524 ,  G01S13/526 ,  G01S9/42

    CPC分类号： G01S7/32 ,  G01S13/5244 ,  G01S13/526

    摘要： In-phase (I) and quadrature (Q) radar return signals are converted to phase to provide phase difference between like range bins of successive pulse repetition intervals (PRI's), the phase differences being reconverted to I and Q format for accumulation across multi-range-bin windows surrounding each range bin to be processed, the normalized range bin accumulations being continuously accumulated in the angle domain, in successive PRI's, to provide clutter phase angle estimates used to rotate incoming target video vectors, a single time, back to the estimated zero-doppler phase of the first PRI of a multi-PRI batch for clutter-elimination filtering. Third-order and fourth-order filtering (utilizing four-PRI and five-PRI batches, respectively), is achieved on a constant one-out-of-four PRI output basis by utilizing the same weighted data for the highest PRI of one fourth-order batch and the lowest PRI of the next higher fourth-order batch, which is rendered possible by the continuous accumulation of estimated phases, over successive PRI's.

    摘要翻译： 同相（I）和正交（Q）雷达返回信号被转换为相位，以提供连续脉冲重复间隔（PRI）的相似范围箱之间的相位差，相位差被重新转换为I和Q格式， 围绕要处理的每个范围仓的范围斌窗口，在连续的PRI中，归一化的范围仓累积在角度域中连续累加，以提供用于旋转输入的目标视频向量的杂波相位角估计，一次，返回到 估计用于杂波消除滤波的多PRI批次的第一PRI的零多普勒相位。 通过利用相同的加权数据获得最高PRI的四分之一的四分之一和四阶滤波（分别使用四个PRI和五个PRI批次）在一个四分之一的PRI输出基础上实现 以及下一个较高的四阶批次的最低PRI，这可以通过连续PRI的连续累积估计阶段而实现。

    Circuit for processing reflected signals
    84.
    发明授权
    Circuit for processing reflected signals 失效
    用于处理反射信号的电路

    公开(公告)号：US3651433A

    公开(公告)日：1972-03-21

    申请号：US3651433D

    申请日：1970-03-02

    申请人： SYMBIONICS INC

    发明人： LANGLEY LAWRENCE W

    IPC分类号： G01S7/32 ,  H03K5/159 ,  H03H7/10 ,  H03H9/00

    CPC分类号： G01S7/32 ,  H03K5/159

    摘要： A circuit for processing reflected signals is described. The reflected signal is delayed for a period of time which is equal to the period of the first half cycle of the reflected signal. It is also attenuated by an amount equal to the difference in amplitude between the first and second half cycles of the reflected signal. The delayed and attenuated signal is then combined with the reflected signal so that only the first half cycle of the reflected signal and the last half cycle of delayed signal remain.

    摘要翻译： 描述用于处理反射信号的电路。 反射信号被延迟一段时间，该时间段等于反射信号的前半周期的周期。 它也被衰减了与反射信号的第一和第二半周期之间的幅度差相等的量。 延迟和衰减的信号然后与反射信号组合，使得只有反射信号的前半个周期和延迟信号的最后一个半周期保持。

    Radar receivers of the successive detections type
    85.
    发明授权
    Radar receivers of the successive detections type 失效
    RADAR接收器的连续检测类型

    公开(公告)号：US3624651A

    公开(公告)日：1971-11-30

    申请号：US3624651D

    申请日：1969-04-08

    申请人： SUD AVIAT SOC NATIONALE DE CON

    发明人： ROBERT ANDRE CHARLES ,  GERLACH MAURICE PIERRE RODOLPH

    IPC分类号： G01S7/32 ,  G01S7/30 ,  G01S9/06

    CPC分类号： G01S7/32

    摘要： The present invention relates to a method of shaping radar signals upon reception, characterized by the fact that it includes the step of subjecting each signal received to successive amplifications and to detections respectively associated thereto, the step of making a first summing of the signals detected up to the penultimate detection, the step of making a second summing of the signals resulting from the first summing and of the signals resulting from the ultimate detection, the step of subjecting the signals resulting from said second summing to a constant time delay, the step of effecting s subtraction operation between the time-delayed signals and the signals resulting from the first summing, and the step of subjecting the signals resulting from said subtraction to a baseclipping and peak-clipping operation whereby to generate usable signals the leading edges of which are produced at instants independent of the amplitude of the signals received and hence, most notably, of the range of the target.