基于射频一体化芯片的模拟地面站技术研究

The research of technologies for analog ground station based on RF integrated chip

地面站配合测控应答机与星务仿真终端,实现测距及遥控遥测功能。本文介绍一种模拟地面站发射系统,它由PC机生成组帧数据,通过以太网传送给下位机发射系统,完成了扫频信号、精确频率的侧音信号以及遥控信号的发送等功能,并在频谱仪上得到了预期结果。下位机发射系统使用的射频一体化(radio frequency integration,RF integration)芯片采用零中频变频方案,降低了模拟地面站设备的复杂度;模拟地面站还采用了软硬件分离设计,软件的设计为模拟地面站的修改和重构提供了方便。本文所述的模拟地面站系统用于对测控应答机的检测。

In conjunction with the ground station,the TTC transponder,together with the satellite terminal,realizes the function of distance measurement and remote control and telemetry.This paper introduces an analog ground station launch system.The frame data generated by the PC is transmitted to the lower machine transmission system through Ethernet.The transmission of the sweep signal,the accurate frequency side tone signal and the remote control signal is completed,and the expected results are obtained on the spectrum analyzer.The radio frequency integration（RF integration）chip used in the lower computer transmitter system adopts zero-IF frequency conversion scheme,which reduces the complexity of the analog ground station equipment.The analog ground station also uses the software and hardware separation design,the software design provides the convenience for the modification and reconstruction of the analog ground station. The analog ground station system described in this paper is used to detect the TTC transponder.