摘要
在分析伪码扩频的可行性和工作原理的基础上,介绍了伪码扩频测控系统的构成和工作过程,设计了伪码扩频信号的调制方式、解调过程和信号的帧结构,探讨了伪码的捕获和跟踪方式。研究结果表明,伪码扩频测控体制具有抗干扰、低截获、信号隐蔽、测距精度高等优点,能够满足未来我国深空测控的需要。
On the basis of the analysis of the feasibility and work principle of the pseudo code spread spectrum technology, the article introduces the constitutes and working process of the system, designs the modulation and demodulation process, the frame of the signal, discusses the method of capturing and tracking pseudo code. The result of research demonstrates that pseudo code spread spectrum TT＆C （Tracking Telemetry ＆ Command） system possesses the following strongpoint＇, anti-jamming, low interception, signal concealment, the high ranging precision, ect. So the system can satisfy the demand of outer space measurement in the future.
出处
《信息与电子工程》
2007年第3期165-169,共5页
information and electronic engineering
基金
总装航天科研资助项目
关键词
伪码测距
扩频技术
航天测控体制
pseudo code ranging
spread spectrum technology
aerospace TT＆C system
