Adaptive radar signal processor
    1.
    发明授权
    Adaptive radar signal processor 失效
    自适应雷达信号处理器

    公开(公告)号:US4661816A

    公开(公告)日:1987-04-28

    申请号:US539239

    申请日:1983-10-05

    CPC分类号: G01S13/5244

    摘要: An adaptive radar signal processor is operable to effectively suppress clutters and extract a target signal with a high degree of accuracy and includes a memory storing two-dimensional radar data corresponding to range and azimuthal directions, multipliers multiplying each of data of the same range but different azimuthal direction read out from the memory, an adder generating the added data of the multipliers as an estimated data, and a weighting coefficient determinater which determines the optimum weighting coefficients based upon the stored radar data so that the difference between the radar data and the estimated data at an observing position is minimized, and produces the difference data as a clutter-suppressed radar data.

    摘要翻译: 自适应雷达信号处理器可操作以有效地抑制杂波并以高精度提取目标信号,并且包括存储对应于范围和方位角方向的二维雷达数据的存储器,乘法器将相同范围但不同的数据相乘 从存储器读出的方位角方向,产生乘法器的相加数据作为估计数据的加法器,以及基于所存储的雷达数据确定最佳加权系数的加权系数确定器,使得雷达数据与估计的 在观测位置的数据被最小化,并且产生差分数据作为杂波抑制的雷达数据。

    MTI Radar comprising a processor selectively operable as a Weibull and a
Rayleigh clutter suppressor
    3.
    发明授权
    MTI Radar comprising a processor selectively operable as a Weibull and a Rayleigh clutter suppressor 失效
    MTI雷达包括可选择性地操作为威布尔和瑞利杂波抑制器的处理器

    公开(公告)号:US4318101A

    公开(公告)日:1982-03-02

    申请号:US129457

    申请日:1980-03-11

    IPC分类号: G01S7/32 G01S7/292 G01S13/52

    CPC分类号: G01S7/2927

    摘要: In an MTI radar receiver, a clutter suppressor (46, 47, 48) is switched (72), under the control of a discriminating device (71) responsive either to the shape parameter .eta. of the Weibull distribution or an average level of a clutter suppressed signal, to be selectively operable as a Weibull and a Rayleigh clutter suppressor for best possible LOG/CFAR processing with simple cell averaging circuitry. The suppressor may comprise a first processor (61) combined with an .eta. parameter calculator (48) for converting the Weibull clutter to the Rayleigh clutter, a second processor (89) for timing, and a simple suppressor (62) for the Rayleigh clutter. (FIG. 6).

    摘要翻译: 在MTI雷达接收机中,在识别装置(71)的控制下,对威布尔分布的形状参数eta或杂波的平均水平进行响应,切换杂波抑制器(46,47,48) 抑制信号,以选择性地操作为威布尔和瑞利杂波抑制器,以利用简单的单元平均电路进行最佳可能的LOG / CFAR处理。 抑制器可以包括与eta参数计算器(48)组合的用于将威布尔杂波转换为瑞利杂波的第一处理器(61),用于定时的第二处理器(89)和用于瑞利杂波的简单抑制器(62)。 (图6)。

    Moving target indication radar
    4.
    发明授权
    Moving target indication radar 失效
    移动目标指示雷达

    公开(公告)号:US4222050A

    公开(公告)日:1980-09-09

    申请号:US961169

    申请日:1978-11-16

    IPC分类号: G01S7/292 G01S13/532 G01S9/42

    CPC分类号: G01S13/532 G01S7/292

    摘要: A moving target indication radar (MTI) having a high azimuthal position detection accuracy. The received radar return signal is separated into quadrature components which are each converted to a series of digital samples. A continuous discrete fast Fourier transform is then performed on groups of samples corresponding to a predetermined number of contiguous azimuthal units of identical range producing an equal number of output Doppler frequency components which represent the relative speeds of stationary and moving objects within the contiguous azimuthal units. A new separate transform operation is performed for each new sample received. The transform outputs are processed to separately detect the stationary and moving objects.

    摘要翻译: 具有高方位位置检测精度的移动目标指示雷达(MTI)。 接收到的雷达返回信号被分成正交分量,每个分量被转换成一系列数字采样。 然后对与相同范围的预定数量的连续方位角单位相对应的样本组执行连续离散快速傅立叶变换,产生相等数量的输出多普勒频率分量,其表示连续方位角单位内的静止和移动物体的相对速度。 对接收到的每个新样本执行新的单独变换操作。 处理变换输出以分别检测静止和移动的物体。