等待接收再入遥测信道的近地衰落模型  

Near-to-ground fading model for reentry telemetry channel in wait-receiving system

作　　者：黄强[1] 贺知明[1] 张健[2] 汪学刚[1] 

机构地区：[1]电子科技大学电子工程学院,四川成都610054 [2]中物院电子工程研究所,四川绵阳621900

出　　处：《电波科学学报》2007年第1期53-58,共6页Chinese Journal of Radio Science

基　　金：国家自然科学基金;中国工程物理研究院联合基金项目资助(10376004)

摘　　要：基于靶场的地形特征、地面接收站的布置特点、等待接收天线以及发射天线的配置情况,提出了等待接收遥测信道的近地衰落模型,它是一个赖斯过程和一指数过程的乘积过程。然后,对信道的统计特性进行了分析,得到了信道的幅度概率密度函数、电平通过率和平均衰落间隔的闭式表达式,并通过仿真曲线分析了信道参数对信道特性的影响。最后,基于真实信道测量数据,给出了一种信道参数的估计方法。Based on the terrain character of shooting range and location of the ground-receiving station and configuration of the wait-receiving antenna and transmitting antenna, the near-to-ground fading model for reentry telemetry channel is presented in this paper. The model is a product of a Rice process and a lognormal process. The statistics characteristic of the channel is analyzed, and the closed expressions of the amplitude-probability density function and the level-crossing rate and average duration of fades are obtained. By using the simulated curves, the effection of the channel parameters on the channel characteristic is discussed. Finally, an estimating method of channel parameters is proposed by employing the measured data of real-world channel.

关 键 词：自跟踪接收 等待接收 多径干扰 

分 类 号：V556.4[航空宇航科学与技术—人机与环境工程]