一种基于信号合成的无线电干涉测量方法  

An interferometry method based on signal combination

作　　者：路伟涛[1,2] 谢剑锋 陈略[1,2] 任天鹏 韩松涛[1,2] 王美 LU Weitao;XIE Jianfeng;CHEN Lue;REN Tianpeng;HAN Songtao;WANG Mei(Beijing Aerospace Control Center, Beijing 100094,China;National Key Laboratory of Science and Technology on Aerospace Flight Dynamic, Beijing 100094,China)

机构地区：[1]北京航天飞行控制中心,北京100094 [2]航天飞行动力学技术国家级重点实验室,北京100094

出　　处：《中国空间科学技术》2019年第4期54-61,共8页Chinese Space Science and Technology

基　　金：国家自然科学基金(11403001,11603001);“十三五”预研课题(160441413008-4)

摘　　要：针对后续深空探测任务更高测量精度需求,文章提出了一种基于信号合成的无线电干涉测量方案,并对方案性能进行了理论分析;结合目前主流信号合成算法,提出了一种基于相位补偿的Sumple算法,该算法不仅合成效率高,且合成信号与参考信号具有相同的相位特性,这是天线组阵技术应用于无线电干涉测量的前提;利用相控阵天线试验数据和DOR信号仿真数据对合成方案和合成算法进行了验证,结果表明信号合成处理可以提高无线电干涉测量时延估计精度,这在深空探测任务中具有重要意义。Aiming at the demand of more accurate interferometry in the following deep space exploration, a novel interferometry scheme based on signal combination is proposed and analyzed. By studying the mainstream signal combination algorithms, an improved Sumple algorithm based on phase comprehension is put forward. This algorithm is more efficient than the original Sumple algorithm, and moreover its combined signal has the same phase performance as that of the reference signal, which is the premise of antenna array technique used for interferometry. Finally, tests are conducted by using phased array data and simulated DOR signal data. The processing results show that the signal combination improves the delay estimation accuracy of interferometry, and is of special meaning in deep space exploration.

关 键 词：无线电干涉测量 信号合成 Sumple算法 相位特性 时延估计 相位补偿 深空探测 

分 类 号：V11[航空宇航科学与技术—人机与环境工程]