伴随着宽带雷达系统的发展,信号带宽越来越大,从而对于电子支援侦察ESM 系统的要求也越来越高。现代ESM系统需要瞬时带宽大且瞬时方位覆盖范围大。为满足ESM 系统新需求,天线阵面由原有模拟阵面逐渐转变为数字阵面。文中首先介绍了数字相控阵多波束体制下ESM 系统的特点;之后,提出了针对多波束ESM 系统的信号处理系统设计方法;分析了系统设计中的关键技术以及系统性能提高的方法;最后,介绍了工程实现和实测效果。

The bandwidth of the signal is getting larger and larger with the development of the wide-band radar system, leading to increasing demands on the ESM system. Large instantaneous bandwidth and azimuthal coverage are both needed in modern ESM system. To meet this demand, the antenna arrays were upgraded from analog to digital gradually. Firstly, the characteristics in ESM system of multi-beam digital phase array are introduced briefly. A design method for the signal process in the multi-beam ESM system was proposed in this paper. Some key technologies and the methods to improve the performance of the system were also analyzed. At the end of this paper, the engineering realization and the actual effect are also presented.

TN957.51