基于多通道DMF的高动态信号捕获

High dynamic signal capture based on multi-channel digital matched filtering

为解决靶场对高动态目标测量中存在的信号捕获难题,依托传统的直扩-码分多址信道,探讨了采用多通道数字匹配滤波方法进行高动态目标信号捕获的原理;在对平均捕获时间、捕获概率和虚警概率等动态信号捕获等性能指标进行分析的基础上,提出了高动态目标信号的捕获方法。将多通道数字匹配滤波技术应用于高动态目标的信号测量,在保持较高抗干扰特性的同时,可以缩短多普勒频移捕获的完成时间,为在靶场精确测量高动态目标提供了可靠的技术手段。仿真结果证明了该方法的有效性。

With the support of the conventional DS-CDMA channel,this paper discussed the principle of high dynamic signal capture based on multi-channel digital matched filtering to solve the problem concerning signal capture in measuring high dynamic targets at the range.After the analysis of the average capture time,the capture probability and the false alarm probability,a high dynamic target signal capture method was proposed.Adopting the multi-channel digital matched filter in high dyna-mic targets signal measure is a good way to shorten the capture time of Doppler frequency excursion with the privilege of high anti-jamming characteristics.This paper provides a reliable technology method for measuring high dynamic targets.The simulation result shows that the method is effective.