公开(公告)号：US5227796A

公开(公告)日：1993-07-13

申请号：US866854

申请日：1992-04-10

申请人： Erik R. Arvidsson

发明人： Erik R. Arvidsson

IPC分类号： G01S13/68

CPC分类号： G01S13/685

摘要： A method of detecting the division of a radar target can detect a target, for instance caused by the release of a weapon from an aircraft which is tracked by a monopulse radar whose antenna is aligned onto the target with the aid of azimuth and/or elevation difference signals. Division of the radar target can be detected irrespective of whether the target is equipped with and uses an interference transmitter, by establishing a search channel in the radar difference channels. This channel has a sensitivity which is very low in a direction towards the tracked target, but which increases rapidly in directions which deviate somewhat from the direction towards the target. The search channel can be established by comparison of the absolute values of the signal levels in the difference channels with a threshold value.

公开(公告)号：US5510737A

公开(公告)日：1996-04-23

申请号：US289539

申请日：1994-08-12

申请人： Erik R. Arvidsson

发明人： Erik R. Arvidsson

IPC分类号： G11C27/02 ,  H03D1/22

CPC分类号： G11C27/024 ,  H03D1/2245

摘要： Method and apparatus for sampling an electrical signal in order to obtain at least one signal weighted together from two or more samples, in which in a first step the electrical signal is connected to a number of capacitors connected in parallel. In a second step, one capacitor is disconnected from the electrical signal at each time of sampling and in a third step, when the sampling is completed, the capacitors are connected together. In this manner, one or more signals weighted together are generated in dependence of the charge of the capacitors when they are disconnected from the electrical signal and of the capacitances of the capacitors.

摘要翻译： 用于对电信号进行采样的方法和装置，以便获得从两个或多个样本一起加权的至少一个信号，其中在第一步骤中，电信号被连接到并联连接的多个电容器。 在第二步中，在每次采样时，一个电容器与电信号断开，在第三步骤中，当采样完成时，电容器连接在一起。 以这种方式，根据电容器的电荷从电信号和电容器的电容断开而根据电容器产生一起加权的一个或多个信号。

公开(公告)号：US4484194A

公开(公告)日：1984-11-20

申请号：US297836

申请日：1981-08-31

申请人： Erik R. Arvidsson

发明人： Erik R. Arvidsson

IPC分类号： G01S7/285 ,  G01S13/50 ,  H03D1/22 ,  G01S7/40

CPC分类号： H03D1/2245 ,  G01S13/50 ,  G01S7/285

摘要： An arrangement is provided for correcting the phase and amplitude errors occurring in the quadrature detector of a Doppler radar system. A correction unit (KE) is connected to both analogue-digital converters (AD1, AD2) in the I and Q channels to receive a radar signal which has been received by the system antenna and phase-detected in the quadrature detector (FD1, FD2, FS). The output of the correction unit (KE) is connected to a regulating network (RN) for sensing the output signals from the correction unit (KE) and controlling the latter so that the amplitude and phase errors (a' and .theta.') will be zero.

摘要翻译： 提供了一种用于校正在多普勒雷达系统的正交检波器中发生的相位和振幅误差的装置。 校正单元（KE）连接到I和Q通道中的两个模拟数字转换器（AD1，AD2），以接收由系统天线接收并在正交检测器（FD1，FD2）中进行相位检测的雷达信号 ，FS）。 校正单元（KE）的输出连接到调节网络（RN），用于感测来自校正单元（KE）的输出信号并且控制后者，使得振幅和相位误差（a'和θ'）将被 零。