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：US4157546A

公开(公告)日：1979-06-05

申请号：US785524

申请日：1959-01-07

申请人： Yves Brault ,  Roland Carre ,  Pierre Percy du Sert

发明人： Yves Brault ,  Roland Carre ,  Pierre Percy du Sert

IPC分类号： G01S13/24 ,  G01S9/23

CPC分类号： G01S13/24

摘要： 1. A system for radiating recurrent pulsed signals having a variable carrier frequency, said system comprising: a source of signals having a random voltage: a non-linear amplifier coupled to said source for amplifying said signals and providing amplified signals, said amplifier having a gain which decreases upon the amplitude of said signals exceeding a predetermined absolute value and having an output; means coupled to said output of said amplifier for storing an amplified signal for the duration of each recurrence period of said pulsed signals; and variable frequency, voltage controlled oscillator means coupled to said storing means.

摘要翻译： 1.一种用于辐射具有可变载波频率的反复脉冲信号的系统，所述系统包括：具有随机电压的信号源：耦合到所述源的非线性放大器，用于放大所述信号并提供放大的信号，所述放大器具有 所述信号的幅度在超过预定绝对值并具有输出的情况下减小的增益; 耦合到所述放大器的所述输出的装置，用于在所述脉冲信号的每个复现周期的持续时间内存储放大的信号; 以及耦合到所述存储装置的可变频率压控振荡器装置。

公开(公告)号：US4908625A

公开(公告)日：1990-03-13

申请号：US769891

申请日：1977-02-15

申请人： Pierre Anthouard ,  Roland Carre

发明人： Pierre Anthouard ,  Roland Carre

IPC分类号： G01S13/90

CPC分类号： G01S13/90

摘要： Video signals delivered by a side-looking radar system during M successive recurrences in each section of a sweep range are sampled, coded and registered in the form of a series of samples of modulus .rho..sub.i and a series of samples of phase .phi..sub.i. The device performs the correlation with a series of samples .theta..sub.i of a synthesized replica by computing, for each recurrence, the modulus of a vector whose components are: ##EQU1##

摘要翻译： 在扫描范围的每个部分的M次连续复现期间由侧视雷达系统传送的视频信号以一系列模数rho i和一系列相位样本的样本的形式进行采样，编码和登记。 该设备通过对于每个重复的方程式计算组件为：的向量的模数，对合成副本的一系列样本θi执行相关性。

公开(公告)号：US4025775A

公开(公告)日：1977-05-24

申请号：US692872

申请日：1976-06-04

申请人： Thierry Beauvais ,  Roland Carre

发明人： Thierry Beauvais ,  Roland Carre

IPC分类号： G06F17/15 ,  G06G7/19 ,  G06F15/34

CPC分类号： G06G7/1928 ,  G06F17/15

摘要： The present invention relates to devices for correlating two phase-modulated signals, in order to determine the delay between said two signals. The signals are applied to phase detectors which receive one and the same local wave. One of the signals is delayed by a variable delay time. The phase values obtained are subtracted from one another. The result is then integrated in the complex plane for a given period of time. The variation of the variable delay permits to determine the correlation function and in particular, the position and the amplitude of the correlation peak.

摘要翻译： 本发明涉及用于使两个相位调制信号相关的装置，以便确定所述两个信号之间的延迟。 信号被施加到接收同一个局部波的相位检测器。 其中一个信号被延迟一个可变的延迟时间。 所获得的相位值彼此相减。 然后将结果集成到复平面上一段给定的时间。 可变延迟的变化允许确定相关函数，特别是相关峰的位置和幅度。

公开(公告)号：US4220953A

公开(公告)日：1980-09-02

申请号：US918791

申请日：1978-06-26

申请人： Roland Carre

发明人： Roland Carre

IPC分类号： G01S13/44 ,  G01S13/68 ,  G01S9/22

CPC分类号： G01S13/685 ,  G01S13/4427

摘要： To improve the accuracy of angular measurements in a radar 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 gated so as to be read only when the sum signal .SIGMA. is at or near a maximum. In a more elaborate embodiment, passage of the deviation signal .epsilon. is also blocked when a quadrature-deviation signal .epsilon.q, likewise derived from the sum and difference signals .SIGMA. and .DELTA., has an absolute magnitude above a preferably adjustable threshold.

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系统中的角度测量的精度，从和通道和差分通道的输出信号SIGMA和DELTA导出的角度偏差信号ε被选通，以便仅在 和信号SIGMA处于或接近最大值。 在更精细的实施例中，当从和和和差信号SIGMA和DELTA同样导出的正交偏差信号εq具有高于优选可调阈值的绝对幅度时，偏差信号ε的通过也被阻止。

公开(公告)号：US4045798A

公开(公告)日：1977-08-30

申请号：US646745

申请日：1976-01-06

申请人： Roland Carre

发明人： Roland Carre

IPC分类号： G01S7/292 ,  G01S7/28

CPC分类号： G01S7/2927

摘要： The present invention relates to a band compression device which make it possible to match a system furnishing signals of spectral width B, to a system having a pass-band b smaller than B. It comprises successively and serially, a variable threshold gating device, an amplifier and a low-pass filter. Control means, connected to the output of the compression device, for controlling the threshold gating device, and permits a constant false alarm ratio in a radar application.