多径环境下运载火箭高码率传输性能研究  

PCM/PSK high bit-rate transmission performance in launch vehicle multi-path channel

作　　者：徐定杰 姜利[1,2] 韩浩[1] 

机构地区：[1]哈尔滨工程大学,黑龙江哈尔滨150001 [2]北京宇航系统工程研究所,北京100076

出　　处：《电子技术应用》2013年第12期118-121,125,共5页Application of Electronic Technique

摘　　要：针对运载火箭高码率情况下遥测信道的特点,对导致高码率遥测信道衰落重要原因之一的多径效应进行了深入研究,详细分析了运载火箭多径效应的典型特点,建立了PCM/PSK体制下的遥测信道数学模型,分析了多径环境下运载火箭PCM/PSK高码率传输性能,对于不同影响因素对遥测信道的影响进行了仿真,对多径环境下高码率传输误码率进行了分析,通过对运载火箭真实飞行过程数据分析,证明了数学模型的准确性。Result is the fading of received signal, which will cause receiver BER （Bit-Error-Rate） increasing and bring great uncertainty to system design. In the paper, the most important reason that causes the high bit-rate telemetry channel fading is studied. Typical characteristics of Launch Vehicle multi-path are analyzed. An analysis model of Launch Vehicle multi-path chan- nel is established. Launch Vehicle high bit-rate transmission performance is analyzed. The multi-path channel which effected by attenuation coefficient and delay time is analyzed and simulated. Simulation results of full-flight BER are given based on a Launch Vehicle trajectory.

关 键 词：多径信道 遥测 高码率 PCM PSK 

分 类 号：TN914.42[电子电信—通信与信息系统]