等待接收遥测系统中接收信号变化规律研究  

Study on the variety disciplinarian of received signal in wait-receiving telemetry system

作　　者：黄强[1] 贺知明[1] 张健[2] 向敬成[1] 

机构地区：[1]电子科技大学电子工程学院,四川成都610054 [2]中国工程物理研究院电子工程研究所,四川绵阳621900

出　　处：《系统工程与电子技术》2005年第9期1515-1518,共4页Systems Engineering and Electronics

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

摘　　要：针对再入遥测信道的双径模型和三波束等待接收系统,利用天线的增益图函数,导出了弹头出黑障后接收信号功率的数学表示。并基于遥测信号合理化接收,导出天线覆盖范围的数值计算方法。仿真计算表明,天线覆盖范围调整后,不但接收信号功率分配更加合理,而且多径干扰更小;接收站距弹头落点越远以及天线波束越宽,多径干扰越严重。Aim at a two paths model of reentry telemetry channel and a three wave beams wait-receiving system, we have used the function of antenna gain pattern to educe the power＇s mathematics expression of the received signal after the warhead coming out the blackout. Then basing on the rational receive of telemetry signal, we have educed the numerical value calculating method of antenna covering range. By simulating and calculating, we can conclude that the power distribution of the received signal is more reasonable and the mulfipath interference is smaller after adjusting the antenna covering range, and the farther between the receiving site and the point of warhead fall and the wider the wave beam of the antenna the more severe the multipath interference. Finally according to the depth of multipath fading, we have divided the measure space into three subrange such as strong multipath fading subrange, weak multipath fading subrange and scare multipath fading subrange.

关 键 词：多径干扰 再入遥测 天线增益图 自跟踪接收 

分 类 号：V556.4[航空宇航科学与技术—人机与环境工程]