自适应干扰抵消系统正交矢量模型及数字实现

Orthogonal Vector Model of SAIN and Its Digital Realization

自适应干扰抵消系统正交矢量模型,将发射机信号取样作为参考信号并正交分解得到两路相位相差90°的信号。分别加权控制该信号,将正交合成结果与实际天线接收信号比较,其误差经两路模拟相关器得到最佳权值,控制该两路信号增益,形成闭合环路,达到自适应干扰抵消。该模型的数字实现方案,采用高速数字信号处理器、A／D和D／A转换器,在5～10MHz频段模拟仿真完成。

For orthogonal vector model of self-adapting interfere neutralization （SAIN） system, sampling signal of transmitter is taken as a reference signal, and it is orthogonality decomposed to get which phase differ by 90 degrees. The two No. signals were controlled by differentiate weighting. After compared the result of adding the two No. signals and the receiving signal from actual antenna, the best weight value was obtained from the two No. simulation correlator by its error, and the gain of this No. two signals was controlled with the best weight value and formed the closing cycle, reached the SAIN. For digital realization scheme, Digital display is realized with the high-speed A/D or D/A converter and high speed digital signal processor, and analog simulation in the spectrum range of 5MHz to 10MHz.