软件无线电技术在短波通信中的应用

短波通信主要依靠电离层反射,可通频段窄,其特性随时间、空间、环境等变化频繁,随着社会发展,环境噪声、各类电磁干扰愈发严重,优质频率随时间空间快速变化,电台选频极为困难。当前主要通过频率管理系统长期预报或人工经验预先指配频率,实际通信过程中往往很难选出好用频率,最终导致短波通信可通率低。本文分析了软件无线电技术在短波通信中的应用,并提出相应优化策略。

Short wave communication mainly relies on ionospheric reflection and has a narrow passable frequency band.Its characteristics change frequently with time,space and environment.With the development of society,environmental noise and various electromagnetic interference become more and more serious.At present,the frequency is mainly assigned in advance by the long-term forecast or manual experience of the frequency management system.In the actual communication process,it is often difficult to select the useful frequency,which ultimately leads to the low passability rate of short-wave communication.This paper analyzes the application of software radio technology in short wave communication and puts forward the corresponding optimization strategy.