一种基于频谱估计的跳频系统干扰检测算法

跳额通信系统由于具有良好的抗干扰和抗衰落性能以及保密性强等优点,已被广泛应用于空间通信系统中.跳频通信系统的干扰检测是空间通信系统信道质量评估的一个关键环节,也是自适应跳频系统的关键核心技术.本文在跳频宽带接收模型基础上,分析对比了多种频谱估计能量检测算法,提出了一种基于AR模型的跳频干扰检测算法,并详细分析了其算法原理和门限设置算法,对多音干扰和部分频带干扰进行检测.经过仿真验证,在无线电静默期和通信过程中该算法都具有很好的检测性能.

An interference detection algorithm based on spectrum estimation for the frequency-hopping system

Frequency-hopping system has been widely used in space communication system for the advantages of good performance of anti-jamming, anti-fading and confidentiality. Interference detection algorithm of frequency-hopping system is a key aspect of space channel quality assessment and an important technique in adaptive frequency-hopping system. Based on the broadband receiver model, this paper analysis and compare a variety of spectrum estimation algorithms, and then introduces a frequency-hopping interference detection theory uses the AR model spectrum estimation and shows the algorithm principles and threshold calculation in detailed. The simulation result shows that for the multi-tone interference and partial interference in both radio silence and communication process the algorithm have a good performance in accuracy.