公开(公告)号：US4345252A

公开(公告)日：1982-08-17

申请号：US119397

申请日：1980-02-07

申请人： Roland Carre ,  Georges Doriath

发明人： Roland Carre ,  Georges Doriath

IPC分类号： G01S7/34 ,  G01S13/02 ,  G01S13/44

CPC分类号： G01S13/4427 ,  G01S13/02 ,  G01S7/34

摘要： To improve the accuracy of angular measurements in a radar or sonar system by suppressing noise due to target glint, an angular-deviation signal .epsilon. derived from the output signals .SIGMA. and .DELTA. of a sum channel and a difference channel is multiplied with a gain-control signal K(t) before being subjected to recursive filtering. Signal K(t) is obtained, also by recursive filtering, from a weighting function P(t) which goes to zero during periods when the measurement of the angular deviation is unreliable as determined from a low value of sum signal .SIGMA. and from a peaking of a quadrature deviation signal .epsilon.q, function P(t) being proportional to the product .SIGMA..sup.n .multidot.(S-.vertline..epsilon.q.vertline.) where the exponent n is at least equal to 1 and S is a predetermined threshold. The recursive filter processing the deviation signal .epsilon. has two cross-connected stages, both controlled by signal K(t), respectively emitting a corrected deviation measurement .epsilon. and an estimated time differential .tau.d.epsilon./dt, .tau. being a delay introduced in a recursive loop of each stage. Prior to being multiplied with gain-control signal K(t), the deviation signal .epsilon. may be additively combined with an angular-orientation signal .theta..sub.r of a radar antenna to yield an angular value .theta..sub.c which can then be multiplied by a measured target distance D to provide a transverse-deviation signal d; in that case the two filter stages respectively emit a corrected deviation signal d and a target-velocity estimate v.

摘要翻译： 为了通过抑制由于目标闪光引起的噪声来提高雷达或声纳系统中的角度测量的精度，从和信道和差信道的输出信号SIGMA和DELTA导出的角度偏差信号ε乘以增益控制 在进行递归滤波之前的信号K（t）。 通过从加和函数P（t）获得信号K（t），加权函数P（t）在从信号SIGMA的低值和从峰值确定的角度偏差的测量是不可靠的时段期间变为零 正交偏差信号εq的函数P（t）与指数n至少等于1且S是预定阈值的乘积SIGMA nx（S-| epsilon q|）成比例。 处理偏差信号ε的递归滤波器具有两个交叉连接的级，它们都由信号K（t）控制，分别发出校正的偏差测量ε和估计的时间差τd​​εε/ dt，τ是在递归中引入的延迟 每个阶段的循环。 在与增益控制信号K（t）相乘之前，偏差信号ε可以与雷达天线的角度方向信号θr相加地组合以产生角度值θc，然后角度值θc可以被乘以测量的目标 距离D以提供横向偏差信号d; 在这种情况下，两个滤波器级分别发出校正偏差信号d和目标速度估计v。

公开(公告)号：US5003313A

公开(公告)日：1991-03-26

申请号：US559046

申请日：1983-11-29

申请人： Georges Doriath

发明人： Georges Doriath

IPC分类号： G01S13/44

CPC分类号： G01S13/4427

摘要： The invention relates to a method for improving the angular resolution of a monopulse radar.Starting from the sum signal S, a direction signal .theta..sub.b, and a signal representing the quadrature angle-error measurement .vertline..epsilon..sub.q .epsilon., the method consists of calculating in a first device 201 a signal .DELTA..theta. representing the wingspan of the target, then of calculating in a second device 202 two measuring signals .theta..sub.A and .theta..sub.B representing respectively the direction of the external limits of the target, as well as a signal Q representing the quality of these measurements and finally of carrying out an adaptive filtering operation on the measurements in a third device 203, in order to obtain filtered estimates for .DELTA..theta., .theta..sub.A and .theta..sub.B.

摘要翻译： 本发明涉及一种改善单脉冲雷达角分辨率的方法。 从和信号S开始，方向信号θb和表示正交角度误差测量值εεεε的信号，该方法包括在第一设备201中计算表示目标的翼展的信号DELTA theta，然后 在第二设备202中计算两个分别表示目标的外部极限的方向的测量信号θA和θB，以及表示这些测量的质量的信号Q，并且最后对其进行自适应滤波操作 在第三设备203中进行测量，以便获得DELTAθ，θA和θB的滤波估计。