Abstract:

In view of the problem of silence zone in HF communication in work,this paper analyzes the causes of the silence zone and provides two solutions.A detailed description is made of the feasibility of the two ways.The methods based on low frequency selection and high elevation angle antenna are given in engineering application.In certain type of simulation system,the silence zone problem in HF communication is effectively solved.

Key words: HF communication;communication silence zone;frequency selection;high elevation angle antenna