GPS周跳频次时空特征分析  

Spatial-temporal Characteristics of GPS Cycle Slip Frequency

作　　者：杨玲 宋梵彬 程碧泉 孙楠 楼立志 YANG Ling;SONG Fanbin;CHENG Biquan;SUN Nan;LOU Lizhi(School of Survey and Geo-information,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学测绘与地理信息学院,上海200092

出　　处：《同济大学学报（自然科学版）》2024年第11期1786-1793,共8页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金(41874004、42274030);上海市自然科学基金(20ZR1462000);中央高校基本科研业务费专项资金(221202105-22)。

摘　　要：利用TurboEdit周跳探测方法对2015―2019年美国连续运行参考系统(CORS)中均匀分布的357个测站的GPS观测数据进行周跳探测,对周跳探测结果的时空特征进行统计分析,并探讨了周跳频次与高度角、地方时、季节以及年份之间的相关性。结果表明,低高度角下周跳频次相对更高;在地方时12:00―18:00区间内,周跳频次显著升高;3月和9月左右周跳频次达到峰值,3月的周跳频次高于9月的周跳频次,而且2015年的周跳频次显著高于其他年份。In this paper,the cycle slip detection method of TurboEdit is used to detect the GPS observation data of 357 stations evenly distributed in the continuous operational reference system(CORS)of the United States of America from 2015 to 2019.The spatial and temporal characteristics of the cycle slip detection results are statistically analyzed,and the correlation between the cycle slip frequency(F-CS)and the elevation angle,local time,season and year is discussed.The results show that F-CS values are relatively higher at low altitude angles and there are more cycle slip events between 12:00―18:00 than those in other times.In addition,F-CS values in March and September reach the peak,and F-CS values in March are higher than those in September.It is notable that F-CS values in 2015 are higher than those in other four years.

关 键 词：周跳探测 相关性 时空特征 

分 类 号：P228[天文地球—大地测量学与测量工程]