一种运载火箭高码率遥测系统设计方案

Design of Launch Vehicle High Bit-Rate Measure System

高码率是我国运载火箭遥测系统PCM-FM体制未来发展方向之一;为解决高码率数据传输过程中出现的无线作用距离下降和基带传输距离不足的问题,参考目前通信领域的技术发展前沿,提出了采用多符号检测(MSD)和Turbo乘积码(TPC)技术解决高码率遥测无线作用距离下降的方案,可在保持箭上发射机输出功率和地面接收天线直径不变的情况下额外获得约6 dB的信道增益,确保测量数据通信正确可靠;同时采用了多级树形拓扑结构、新型基带通信协议和帧格式设计方法解决了高码率条件下基带数据传输距离不足的问题,并以某新型运载火箭为例,给出了高码率遥测系统的组成构架结构。

High bit--rate is the future development direction of the launch vehicle PCM--FM measurement system in China. Proposed Using the multi--symbol--detector （MSD） and turbo product codes （TPC） to solve the decreased wireless range in measurement system. It can get additional approximately 6 dB gain in keeping the output power of transmitter and the diameter of receiving antenna. By using the multistage tree topology, the new baseband communication protocol and the data frame format to solve the baseband transmission distance insufficient problem at high bit--rate. It gives an example of the launch vehicle high bit--rate measurement system topology.