哈尔滨工程大学学报2018，Vol.39Issue(5)：915-920,6.DOI:10.11990/jheu.201702002
基于卡尔曼滤波和RTS事后平滑的GNSS共视时间比对算法
GNSS common-view time comparison algorithm based on Kalman filtering and Rauch-Tung-Streibel smoothing
摘要
Abstract
Using time comparison based on the Global Navigation Satellite System(GNSS)is a key technique in time synchronization,timing,and other applications, and time comparison an important measure for correcting the time difference in GNSS receivers and improving their design and performance.By focusing on the ionospheric and tropo-spheric delays in GNSS signal propagation,this study considers the effect of the rotation on the signal and calculating the satellite position by combining Kalman filtering and Rauch-Tung-Striebel(RTS)after-smoothing to improve the accuracy of the time comparison.This research considers the tropospheric delay,current delay,and the earth rotation effect of link delay based on a consensus time comparison Kalman filtering algorithm on RTS after adding a smoothing algorithm based on the state equation and increasing the coefficient.By using Kalman algorithm after improving the accuracy by filtering and using the RTS algorithm after applying the consensus smoothing algorithm can effectively im -prove the precision of time comparison to achieve a time comparison precision of 2 ns time.关键词
时间比对/共视/电离层延时/对流层延时/Kalman滤波/RTS平滑/地球自转效应/传输时延Key words
time comparison/common view/ionospheric delay/tropospheric delay/Kalman filtering/RTS smoot-hing/earth rotation effect/transmission delay分类
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程禹,吴限德,韩华,谢亚恩,邓月,宋婷..基于卡尔曼滤波和RTS事后平滑的GNSS共视时间比对算法[J].哈尔滨工程大学学报,2018,39(5):915-920,6.基金项目
黑龙江省自然科学基金项目(F2015032) （F2015032）
中央高校基本科研业务费专项资金项目(HEUCFP201770) （HEUCFP201770）
国家自然科学基金项目(11772185) （11772185）
哈尔滨市青年科技创新人才基金项目(2013RFQXJ001). （2013RFQXJ001）
