无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2015年
6期
78-80,84
,共4页
倪光华%杜智远%王东%石玉景
倪光華%杜智遠%王東%石玉景
예광화%두지원%왕동%석옥경
地空信道%多径衰落%分集%信道模型
地空信道%多徑衰落%分集%信道模型
지공신도%다경쇠락%분집%신도모형
ground-to-air channel%multi-path fading%diversity%channel model
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。
地空通信信道是一箇典型的二徑衰落信道，會產生較深的多徑衰落，需要採用分集接收技術提高通信性能。利用電磁波傳輸理論，對地空通信信道的信號傳輸過程進行分析，建立瞭地空通信的分集接收模型，併在此基礎上設計瞭專用倣真軟件。利用倣真軟件進行瞭倣真，對比不同分集條件下的分集接收效果，得齣在地空通信信道下，必鬚對頻率規劃和天線架高進行綜閤攷慮，纔能取得較好的分集接收效果。
지공통신신도시일개전형적이경쇠락신도，회산생교심적다경쇠락，수요채용분집접수기술제고통신성능。이용전자파전수이론，대지공통신신도적신호전수과정진행분석，건립료지공통신적분집접수모형，병재차기출상설계료전용방진연건。이용방진연건진행료방진，대비불동분집조건하적분집접수효과，득출재지공통신신도하，필수대빈솔규화화천선가고진행종합고필，재능취득교호적분집접수효과。
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.
