基于Δ调制编码对噪声调频干扰源的无源定位

针对无源系统对噪声调频干扰源进行时差定位问题,提出了在无源系统中对接收到的噪声调频干扰信号进行增量调制编码(Δ调制编码),利用增量调制编码序列采用相关法可以估计主辅站信号到达时差。讨论了不同干噪比条件下的时差估计精度,通过仿真将该方法与直接利用噪声调频信号相关估计进行比较,该方法具有相同的效果且可以降低主辅站之间的数据通信量。

Noise-frequency modulation jammer location in passive systems based on delta-modulation coding

To locate noise-frequency modulation jammer with time difference of arrival(TDOA) in passive systems,a new method of delta-modulation coding jointed cross-correlation is presented.The location accuracy of this method is discussed when the jam-noise ration(JNR) of receiver stations is various.Simulations show that this method possesses the same performance as the cross-correlation one using signal sample data directly.The most advantage of this method is that it can reduce throughputs between passive location receiver stations.