摘要
针对北斗三号卫星可播发四频信号的特点,提出一种联合3个无几何相位组合和1个伪距相位组合的实时周跳探测与修复方法。首先探讨多频条件下的高质量组合,然后挑选3个无几何相位组合和1个伪距相位组合共同进行周跳探测,并利用LAMBDA方法实时修复周跳,最后采用不同观测条件下的实测数据对该方法的有效性进行验证。结果表明,该方法相比于三频条件受电离层延迟影响更小,可实时探测与修复四频观测数据中的周跳。
Aiming at the characteristic that Beidou-3 satellites can broadcast four-frequency signals,we propose a real-time cycle slip detection and repair method.The method combines three geometry-free phase combinations and one code-phase combination.Firstly,the high-quality geometry-free combination under multi-frequency conditions is discussed,and then three geometry-free phase combinations and one code-phase combination are selected to detect the cycle slips,combined with the LAMBDA method to repair the cycle slips in real time.Finally,we use the measured data under the different observation conditions to verify the effectiveness of the proposed method.The results show that the method is less affected by ionospheric delay than three-frequency condition,and can detect and repair the cycle slips in real time.
作者
袁海军
章浙涛
何秀凤
周叶
苗维凯
YUAN Haijun;ZHANG Zhetao;HE Xiufeng;ZHOU Ye;MIAO Weikai(School of Earth Sciences and Engineering,Hohai University,Nanjing 211100,China;Northern Information Control Research Institute Group Co Ltd,Nanjing 211153,China;College of Surveying and Geo-Informatics,Tongji University,Shanghai 200092,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2021年第10期1045-1050,共6页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(41830110,42004014)
江苏省自然科学基金(BK20200530)
中国博士后科学基金(2020M671324)
江苏省博士后基金(2020Z412)
大地测量与地球动力学国家重点实验室开放基金(SKLGED2020-3-8-E)
南京市留学人员科技创新项目。
关键词
北斗三号卫星
四频数据
周跳探测与修复
无几何相位组合
伪距相位组合
Beidou-3 satellite
four-frequency data
cycle slip detection and repair
geometry-free phase combination
code-phase combination
