基于空时块编码的飞行器全向无线通信分析  

Analysis of Omni-Directional Wireless Communications of Space Vehicle Based on Space Time Block Coding

作　　者：耿健 程永生[1] 闫新峰[1] 孙涛[1] GENG Jian;CHENG Yong-sheng;YAN Xin-feng;SUN Tao(Beijing Institute of Space Long March Vehicle,Beijing 100076,China)

机构地区：[1]北京航天长征飞行器研究所,北京100076

出　　处：《测控技术》2018年第8期126-130,共5页Measurement & Control Technology

摘　　要：将空时块编码引入飞行器全向无线传输中,用于抑制传统飞行器全向通信中不同天线发送信号在空间中发生干涉的问题。从等效合成天线增益和适合的应用场景两方面对基于空时块编码的传输方案的性能进行分析和讨论。针对不同的传输场景进行了仿真评估。仿真结果表明:使用空时块编码的方案性能与天线数量和天线方向图有关;相比传统方案,采用空时块编码能够有效抑制信号在空间中的深衰减,降低通信链路中断概率,从而大幅改善飞行器全向通信能力。The space time block coding is introduced into the omni-directional space vehicle communication systems to mitigate the spatial interference between signals transmitted from multiple antennas in the traditional transmission scheme. The proposed scheme was analyzed from the aspects of the composite antenna patterns and appropriateness in applications. The performance evaluation for different transmission scenarios shows that the proposed scheme can effectively restrain the spatial interference appearing in the traditional scheme,and reduce the outage probability for omni-directional communication of vehicles. It also shows that the performance of the scheme based on space time block coding is related to the number of antennas and antenna patterns.

关 键 词：飞行器 多天线 空时块编码 遥测 数据传输 

分 类 号：V19[航空宇航科学与技术—人机与环境工程] V217