一种多卫星信号参数的快速盲估计方法

A Fast Algorithm of Blind Parameters Estimation for Multiple Satellite Signals Received in Single Channel

针对电子侦察领域中单通道多卫星信号处理这一新兴课题,提出了一种多信号盲多参数快速估计算法。该算法在检测到卫星信号的前提下,先进行信号个数的盲估计。在对目前存在的各种信号参数估计方法进行充分分析、研究的基础上,进而提出了一种通用的盲多参数快速估计方法,并对其中的滤波器群延迟等关键问题进行了深入分析。计算机仿真表明,与其它算法相比,该算法具有较好的多参数盲估计能力,且通用性和实时性强,能适应单通道多卫星信号的情况。

Processing multiple satellite signals received in single channel is a problem concerned by the field of electron recon- naissance. A general algorithm of blind parameters estimation for such signals was introduced in this paper. Given signals having been detected, number of signals was blindly estimated at first. Then the blind estimation method of multiple parameters was offered through adequate analysis and research on other methods. Group delay of filters,which is a key problem of the method, has also been deeply explored. Computer simulation indicated that this algorithm has better capacity of blind parameters estimation than other ones, such as strong versatility, real-time, adaptability of multiple signals received in single channel and so on.