联通3G信号对遥测系统测量环境影响分析

Analysis on Effect of Unicom 3G Signal on Telemetry System Measurement Environmental

随着航天技术的发展,遥测系统已成为靶场测控网络的重要组成部分,同时各通信公司正通过广泛建立基站的方式以达到3G通讯全面覆盖的要求。着重研究联通3G信号对遥测系统测量环境的影响,证明了在3G信号影响空域内,遥测系统低噪声放大器(LNA)增益减小,噪声温度增大,作用距离减小,并提出针对性举措,对避免无线电测量设备在工作中受到复杂电磁信号的影响具有一定作用。

With the development of space technology, the telemetry system has become an important part of the range measurement and control network. At the same time, all communications companies are constructing base stations in order to achieve universal coverage of 3G communication requirements.This paper studies the impact of Unieom 3G signal on for telemetry system meas- urement environment.The results show that in the airspace affected by 3G signal,the noise temperature increases and the operating range reduces with the decreasing of LNA gain of telemetry system.Based on this,some measures are presented to avoid the effect of complex electromagnetic signal on radio measurement equipment.