基于PCM-FM体制下遥测作用距离研究

Investigation on operating distance of telemetry base on PCM-FM system

为了实现靶场试验数据的有效采集、遥测接收和发射系统的设计选择、遥测地面站合理布置等目的,在PCM-FM遥测体制下,采用靶场试验中典型的频点和码速率以及给出相应的遥测地面站的情况下,对遥测作用距离和遥测接收系统门限进行详细的分析和计算。同时对影响遥测作用距离的几个关键因素进行分析讨论,获得了对同一遥测发射和接收系统下,不同码速率的系统接收门限和遥测作用距离的计算结果。遥测作用距离的研究对遥测系统设计中码速率选择、遥测发射和接收机的研制具有重要的指导意义。

In order to test data the effective acquisition,telemetry receiving and transmitting system design choices and telemetry ground station layout,in this paper,base on FCM-FM telemetry system,and using the test range in the typical frequency and code rate as well as the corresponding telemetry ground station case,a method of telemetry action distance and telemetry receiving system threshold are detailed analysised and calculationed.At the same time,the effects of remote distance of several key factors are analyzed and discussed,were obtained for the same remote transmitting and receiving system,different code rate system receiving threshold and telemetry function distance calculation.The research on operating distance of the telemetry has the important guiding significance in code rate selection and telemetry transceiver development.