基于信道特性分析的短波远距离地空通信

短波天波信道（时变信道）的衰落特性是影响远距离短波通信质量的主要因素，准确 分析预测短波信道传输特性是通信成功的基础。结合工程试验分析了影响短波通信质量的 诸多因素，选择最佳的通信信道，成功实现了远距离短波地空通信。分析预测-选择信道频 率-静态测试-短波通信的方法，对短波通信系统远距离通信能力考核试验具有参考价值。

Long range air-ground HF communication based on channel characteristic analysis

Fading characteristic of HF sky-wave channel is the main factor to inf luence long range HF communication quality. Predicting HF propagation characteri stic precisely is an element for successful communication. Factors influencing HF communication quality are analysed along with engineering experiment.By c hoosing the best channel long range air-ground HF communication is realized. The method of predicting-frequency preference-static test-communication can provi de good reference for long range communication test of HF systems.