检前记录设备在天线组阵中的应用比较研究

Comparative Study on Application of IF Signal Recorder in Data Receiving Mission Performed by Antenna Array

针对火星探测任务所面临的天线组阵技术应用,本文设计了应用检前记录设备参与下行数传信号合成与数据解调的两种方案,用来解决深空探测任务下行数据接收问题。通过描述天线组阵信号合成和检前记录设备的技术现状,论证了使用深空站配置的检前记录设备参与天线组阵数传信号合成与数据解调的适用性和可行性,并设计了详细的应用方案。这些方案具有简单易行、效费比低、可靠性高等特点,可为我国火星探测任务中下行科学探测数据的接收提供技术参考。

The antenna array technology is applied in Mars exploration and the data receiving is an essential point. We designed two schemes of signal synthesis and data demodulation by applying an IF （ intermediate frequency） signal recorder in receiving the dowrdink data in the deep space exploration. This article describes the status of antenna array signal synthesis and IF signal recording technology, demonstrates the applicability and feasibility of an IF signal recorder used in antenna array digital signal synthesis and data demodulation, and designs the detailed applications. The schemes are easy to operate, very cost effective, and highly reliable. They can serve as technical reference for receiving the downlink data in the scientific exploration on the Mars.