再入遥测信道建模与分析  

Modeling and Analysis of Reentry Telemetry Channel

作　　者：曾海彬[1] 孟玮[2] 陈静[2] 郭肃丽[2] 

机构地区：[1]北京跟踪与通信技术研究所,北京100094 [2]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2016年第9期59-60,72,共3页Radio Engineering

摘　　要：针对再入遥测飞行器的测控过程中落区目标飞行器接收信号会出现中断的现象,研究再入遥测飞行器的环境,分析了再入遥测信道的特性,将再入遥测信道建模为时变的二径莱斯信道,通过建模仿真,模拟目标信号经过信道后信号功率的变化情况,并从天线架高和载波频率2个方面分析了其对信道特性的影响,得出结论表明,降低接收天线架高和采用频率分集接收的方式是比较有效的对抗多径效应的方法。To address the issue of signal reception interruption of the reentry telemetry aircraft,the special environment of reentry telemetry aircraft and the characteristics of reentry telemetry channel are analyzed.The channel can be modeled as a time variable two-ray reflection Rice channel.The signal power of aircraft passed through this channel is simulated,and the impact to the characteristics of channel is analyzed with respect to the height of antenna and the frequency of carrier.And it is concluded that the impact of multi-path effect can be reduced by lowering the height of antenna and using frequency diversity reception.

关 键 词：再入遥测 二径信道 信道建模 分集接收 

分 类 号：TN914[电子电信—通信与信息系统]