摘要
地空通信信道是一个典型的二径衰落信道,会产生较深的多径衰落,需要采用分集接收技术提高通信性能。利用电磁波传输理论,对地空通信信道的信号传输过程进行分析,建立了地空通信的分集接收模型,并在此基础上设计了专用仿真软件。利用仿真软件进行了仿真,对比不同分集条件下的分集接收效果,得出在地空通信信道下,必须对频率规划和天线架高进行综合考虑,才能取得较好的分集接收效果。
Ground-to-air communication channel which is a two-path fading channel and causes deep multi-path fading,needs to adopt diversity reception technique to improve the communication performance.The signal transmitting process in ground-to-air commu-nication channel has been analyzed and diversity reception model of ground-to-air communication has been constructed by using the electromagnetic transmission theory,on the basis special-purpose simulation software is designed.By comparing different diversity recep-tion performance on different diversity conditions,the paper presents that it is necessary to take comprehensive consideration of frequen-cy planning and antenna height to achieve the better performance of diversity reception.
出处
《无线电工程》
2015年第6期78-80,84,共4页
Radio Engineering
基金
国家部委基金资助项目
关键词
地空信道
多径衰落
分集
信道模型
ground-to-air channel
multi-path fading
diversity
channel model
