脉冲超宽带技术在航天测控系统中的应用  

Application of Impulse Radio UWB Technology in Space TT&C System

作　　者：廉昕 王元钦 侯孝民 孟祥利 

机构地区：[1]装备学院光电装备系,北京101416

出　　处：《电讯技术》2016年第9期1005-1010,共6页Telecommunication Engineering

摘　　要：针对当前航天测控系统安全性不足的问题,将脉冲超宽带技术应用于航天测控系统中,构建了一种新的脉冲超宽带测控体制。建立了基本的脉冲超宽带测控信号模型,对脉冲超宽带测控系统的性能和传输链路进行了分析。给出了脉冲超宽带测控系统结构框图,介绍了系统工作过程。针对并行信号捕获方法资源消耗大的不足,提出了两步并行捕获方法。分析表明,脉冲超宽带技术可用于航天测控系统中,完成测距测速和数据传输任务。脉冲超宽带测控系统可有效提高测控系统的隐蔽性和抗干扰能力,同时提高测距精度。在信号捕获方面,与并行捕获方法相比,两步并行捕获方法的硬件资源消耗得到大大降低,同时还可保证较快的捕获速度,但会产生一定的信噪比损失。According to the security shortcoming of current space TT＆C system,the impulse radio ultra - wideband （IR-UWB） technology is introduced into TT＆C system,and a new IR-UWB TT＆C system is es-tablished. A basic IR-UWB TT＆C signal model is built,and the performance and transmission link of the system are analyzed. The structure diagram of the IR-UWB TT＆C system is given,and the whole working process of the system is introduced. According to the excessive resource consumption of the parallel signal acquisition method,a new two-step parallel acquisition method is proposed. Analysis shows that the IR- UWB technology can be used in TT＆C system to accomplish range and range rate measurement and data transmission. The IR-UWB TT＆C system can effectively improve the concealment performance and anti-interference ability of TT＆C system,and improve the range measurement accuracy at the same time. As for signal acquisition,compared with parallel acquisition method,the hardware resource consumption of the two -step parallel acquisition method is greatly reduced,and this method can also guarantee a fast acquisition speed,but it will bear certain signal-to-noise ratio （SNR） loss.

关 键 词：航天测控 脉冲超宽带技术 安全性 系统设计 信号捕获 

分 类 号：V556.6[航空宇航科学与技术—人机与环境工程] TN914.2[电子电信—通信与信息系统]