Phase detection based range estimation with a dual-band robust Chinese remainder theorem  

作　　者：YANG Bin WANG WenJie XIA XiangGen YIN QinYe 

机构地区：[1]Ministry of Education (MOE) Key Laboratory for Intelligent Networks and Network Security,School of Electronics and Information Engineering,Xi’an Jiaotong University [2]Department of Electrical and Computer Engineering,University of Delaware

出　　处：《Science China(Information Sciences)》2014年第2期14-22,共9页中国科学（信息科学）（英文版）

基　　金：partially supported by National Natural Science Foundation of China(Grant No.61172092);Foundation for Innovative Research Groups of National Natural Science Foundation of China(Grant No.60921003);supported in part by Air Force Ofce of Scientific Research(AFOSR)(Grant No.#FA9550-12-1-0055)

摘　　要：Range estimation with multifrequency phases is a common practice in localization systems. The challenge of this method is the phase ambiguity. Some Chinese remainder theorem （CRT） based phase un- wrapping algorithms have been proposed to solve the problem, where the wavelengths of the multifrequency signals need to be pair-wisely co-prime after they are divided by their greatest common divisor （gcd）. This condition may limit the application in practice. In this paper, a novel way based on a dual-band robust CRT is presented to reconstruct the distance from dual-band wrapped phases, where the pair-wisely co-prime condition is not necessarily needed. As more wrapped phases are involved to reconstruct the distance, the method can significantly enlarge the reconstruction range compared to the single band solution.Range estimation with multifrequency phases is a common practice in localization systems. The challenge of this method is the phase ambiguity. Some Chinese remainder theorem （CRT） based phase un- wrapping algorithms have been proposed to solve the problem, where the wavelengths of the multifrequency signals need to be pair-wisely co-prime after they are divided by their greatest common divisor （gcd）. This condition may limit the application in practice. In this paper, a novel way based on a dual-band robust CRT is presented to reconstruct the distance from dual-band wrapped phases, where the pair-wisely co-prime condition is not necessarily needed. As more wrapped phases are involved to reconstruct the distance, the method can significantly enlarge the reconstruction range compared to the single band solution.

关 键 词：range estimation Chinese remainder theorem （CRT） ROBUSTNESS dual band 

分 类 号：TN92[电子电信—通信与信息系统]