摘要
针对TCAR法在北斗三频长基线模糊度固定中成功率不高的问题,提出采用滑动窗口的方法对EWL、WL和NL模糊度进行固定。通过实验分析窗口大小与模糊度固定成功率的关系得出,在长距离定位中,模糊度固定成功率主要受到电离层延迟和对流层延迟的影响。因此采用滑动窗口固定EWL和WL模糊度后,通过GIF-TCAR法解算NL模糊度,同时使用滑动窗口法来固定NL模糊度。实验结果表明,该方法可用于北斗三频实时定位。
Aiming at overcoming the difficulties of using TCAR method to fix ambiguity of Beidou triple-frequency long-baselines, we propose a sliding window method to fix the ambiguity of EWL, WL and NL. In long baselines, according to the experimental analysis of the relationship between window size and ambiguity successful rate, the ambiguity successful rate is mainly affected by ionospheric and tropospheric delays. Therefore, we use the sliding window method to fix EWL and WL ambiguities, the GIF-TCAR method to calculate NL ambiguity, at the same time using the sliding window method to fix NL ambiguity. The results indicate that this method can be used in BDS triple-frequency processing for real-time navigation and positioning.
作者
庄文泉
王利
郝明
崔笃信
ZHUANG Wenquan1 WANG Li2 HAO Ming1 CUI Duxin1(1 The Second Monitoring and Application Center, CEA, 316 Xiying Road, Xi＇an 710054, China 2 School of Geology Engineering and Geomatics, Chang＇an University, 126 Yanta Road, Xi＇an 710054, Chin)
出处
《大地测量与地球动力学》
CSCD
北大核心
2018年第3期268-272,共5页
Journal of Geodesy and Geodynamics
基金
陕西省青年科技新星计划(2015KJXX-74)
中国地震局地震行业科研专项(201508009)~~
关键词
TCAR
北斗三频
长基线
模糊度固定
TCAR Beidou triple-frequency long-baseline fix ambiguity
