联合多普勒及MW周跳探测和修复方法  

Joint Doppler and MW cycle slip detection and repair method

作　　者：纪元法[1,2] 贾茜子 孙希延 JI Yuanfa;JIA Xizi;SUN Xiyan(Guangxi Key Laboratory of Precision Navigation Technology and Application,Guilin University of Electronic Technology,Guilin Guangxi 541004,China;Satellite Navigation and Location Service National&Local Joint Engineering Research Center,Guilin Guangxi 541004,China)

机构地区：[1]桂林电子科技大学,广西精密导航技术与应用重点实验室,广西桂林541004 [2]卫星导航定位与位置服务国家地方联合工程研究中心,广西桂林541004

出　　处：《太赫兹科学与电子信息学报》2020年第4期600-605,共6页Journal of Terahertz Science and Electronic Information Technology

基　　金：国家重点研发计划资助项目(2018YFB0505103);国家自然科学基金资助项目(61561016,61861008,11603041);广西科技厅资助项目(桂科AC16380014,桂科AA17202048,桂科AA17202033);广西自然科学基金资助项目(2018JJA170090);桂林科技局资助项目(20160202,20170216)。

摘　　要：导航定位中针对双频码相组合法(MW)无法探测L1和L2载波同一历元发生相同周跳,以及周跳探测后不能实现频率间周跳分离的情况,提出了一种联合多普勒及MW组合法的周跳探测改进方法。利用多普勒积分可对单频点进行周跳检测和修复的特性,将传统MW组合法与多普勒积分法相结合,建立改进模型,从而计算并分离出L1和L2载波相位产生的周跳。用实测数据进行验证和分析,对比了3种不同情况下改进方法的检测效果,实验表明新算法能精确探测和分离出L1和L2载波相位中的周跳组合,可以准确探测周跳发生位置及周跳数值,并且能够探测和修复1周以上的周跳,有效提高了MW组合算法探测与修复周跳的准确性和可靠性。Melbourne-Wübbena(MW) combination method cannot detect the same cycle slip in the same epoch of L1 and L2 carriers, and the cycle slip separation cannot be realized after the sounding of the cycle. An improved method of cycle slip detection based on jointing Doppler and MW combination is proposed. The Doppler integral is applied to detect and repair the cycle slip of single frequency point. Combining the traditional MW method and Doppler integral method, an improved model is established, and the cycle slips generated by L1 and L2 carrier phases are calculated and separated. Verification and analysis are carried out by the measured data, and the detection results of the improved methods under three different conditions are compared. Experiments show that the new algorithm can not only detect and separate the cycle slip combinations in L1 and L2 carrier phases accurately, but also accurately detect the location and the values of cycle slips;and it can detect and repair the cycle slips for more than 1 cycle, which effectively improves the accuracy and reliability of the MW combination algorithm.

关 键 词：周跳 探测和修复 多普勒 MW组合 

分 类 号：TN927[电子电信—通信与信息系统]