深空接收机关键技术分析

通过对JPL、ESA等深空接收机技术进行研究,并结合当前国内信号处理技术发展状况,分析了深空接收机的诸多关键技术,从信号处理角度讨论了提高接收灵敏度的方法和适用技术,以解决深空微弱信号的捕获、跟踪和解调.着重介绍了微弱信号频率捕获、超窄带锁相环、边带辅助残留载波环、环路加窗技术、加权IDF、SSME信噪比估计技术、变环路带宽与变窗口技术等关键技术,对我国自主设备研制具有一定的参考价值.

Discussion on the Key Technologies of Deep Space Receiver

Through studying JPL and ESA deep space receiver technologies and the signal processing technologies in china,deep space receiver key technologies are analysed. For solving weak signal ac-quisition,tracking and demodulation,the signal processing methods and technologies to improve receiv-er sensitivity are discussed. Such key technologies are introduced as weak signal frequency acquisition, ultra- narrow phase- locked loop,side- band aided residual carrier loop,windowed loop technology, weighted IDF,SSME signal-to- noise estimation technology,varying loop bandwidth and varying win-dow technique are emphasized. The key technologies presented in this paper have reference value for china's self- development deep space equipment.