多普勒积分重构与STPIR联合周跳探测与修复  

Detect and repair cycle-slip by reconstruction Doppler integral algorithm and STPIR

作　　者：蔡成林 沈文波[2,3] 曾武陵 于洪刚 谢小平[4] CAI Chenglin;SHEN Wenbo;ZENG Wuling;YU Honggang;XIE Xiaoping(School of automation and electronic information, Xiangtan University, Xiangtan 411105, China;College of Information and Communication, GuiLin University of Electronic Technology, Guilin 541004, China;Liuzhou Power Supply Bureau, Guangxi Power Grid Co., Ltd., Liuzhou 545005, China;School of economics and statistics, Guangzhou University, Guangzhou 510006, China)

机构地区：[1]湘潭大学自动化与电子信息学院,湖南湘潭411105 [2]桂林电子科技大学信息与通信学院,广西桂林541004 [3]广西电网有限公司柳州供电局,广西柳州545005 [4]广州大学经济与统计学院,广东广州510006

出　　处：《测绘学报》2021年第2期160-168,共9页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金(61771150);湖南省科技创新计划(2018GK2014,2018RS3089);广西重点研发计划(AB17129028)。

摘　　要：用载波相位精密定位需保证相位无周跳,而1周的小周跳仍是目前双频定位中难以解决的问题。MW(Melbourn-Wübbena组合)法联合电离层残差法探测周跳应用广泛,但MW法精度不足。为此,本文提出重构多普勒积分的新方法以替换MW法。该方法基于信号传播的多普勒模型,仅利用广播星历和伪距定位的位置,即可重构出比多普勒观测量误差更小的值。为了最大限度地提高重构多普勒的探测周跳能力,进一步提出了重构双频组合的多普勒,并用于积分的方法。但该方法与MW存在相同的周跳探测盲点,所以联合STPIR(电离层残差的二次时间差法)法进行周跳探测与修复。经实测的动态1 Hz和静态1/30 Hz的双频数据中插入模拟周跳验证,重构多普勒积分法比MW法探测误差更小。本文提出的联合方法在上述条件下,可以探测和修复任意整数周跳,且采样率越高,效果越好。It is necessary to ensure that there is no cycle-slip in the carrier phase for precise positioning.Currently,one cycle-slip is still a difficult problem in double-frequency positioning technology.MW(Melbourn-Wübbena combination)method combined with ionospheric residual method is widely used to detect cycle slip,but the accuracy of MW method is insufficient.Therefore,we develop a novel method called reconstruction doppler integral to replace the MW method.Based on the Doppler model of the signal transmission,it can acquire precise Doppler values with the results only by using the broadcast ephemeris and pseudo range.In order to further improve the performance of the proposed method,reconstruction of dual frequency combined Doppler is proposed and integrated.But this method has the same blind zone of cycle-slip detection as the MW method,so we integrate the STPIR(second-order time-difference phase ionospheric residual)algorithm into the detection method above.We validate the proposed method for the cycle-slip detection on data of two types sampling rate(e.g.,kinetic 1 Hz and static 1/30 Hz)containing the simulated cycle-slips.The results show that the detection error of the reconstruction Doppler integral method is smaller than that of the MW method.In conclusion,our method can accurately detect and repair any integer cycle-slips under the above conditions,and the higher the sampling rate,the higher the precision.

关 键 词：重构多普勒 双频组合的多普勒 电离层残差时间二次差法 周跳探测与修复 

分 类 号：P228.1[天文地球—大地测量学与测量工程]