论文部分内容阅读
1.前言迄今为止,实用的无线电遥测系统的体制只有两类:一类是按时间分割实现多路传输的,称为时分制;另一类是按频率分割实现多路传输的,称为频分制。由这两种体制构成的各种遥测系统,已在世界各国广泛应用多年,航空部○一四中心于六十年代研制的 YC-3系统属频分制,七十年代研究的 YC-4、YC-5两系统均属时分制。一九八零年前后,北京航空学院张其善教授等首先将沃尔什函数理论应用于无线电遥测
1. Preface So far, there are only two types of systems for practical radio telemetry systems: one is time division for multiplexing, which is called time division; the other is for frequency division to realize multiple transmission, which is called frequency Points system. The telemetry system composed of these two systems has been widely used in many countries in the world for many years. The YC-3 system developed by the Ministry of Aviation in the 1960s belongs to the YC-4 system of frequency division and research in the 1970s, YC-5 two systems are time-sharing system. Around 1980, Professor Zhang Qishan of Beijing Aeronautical Institute first applied Walsh function theory to radio telemetry