摘要
CORS基站由于相位偏心或地壳运动会使其坐标值与实际位置不一致,影响网络RTK技术的实际应用,必须定期对其进行检测。精密单点定位技术是GPS界研究的一个热点,可以获得毫米级精度。本文采用P3软件对CORS基站观测数据进行处理并进行精度分析,结果表明:A站X、Y、Z五个月的平均偏差为8 mm、9.2 mm和6mm,B站X、Y、Z五个月的平均偏差为7.2 mm、5 mm和3.2 mm,这两个基站比较稳定。
CORS stations＇ coordinates are inconsistent with their real positions because of its eccentric phase and crustal movement and they must be detected in order to serve the society, precise point positioning （PPP） has been a hot spot in GPS world and it is able to provide few millimeter-level results. This paper first introduces two softwares.. P3 and SEU_PPP and it compares the two softwares on accuracy, convergence period and stability. Then it uses the better one to process CORS data and gives the analysis on the accuracy of CORS stations coordinates. The results show that the average errors of A are 8 ram, 9. 2 mm and 6 mm; the average data of B are 7. 2 mm, 5 mm and 3.2 mm. The two stations are stable now.
出处
《现代测绘》
2013年第1期3-6,共4页
Modern Surveying and Mapping
关键词
精密单点定位偏差稳定性精度
precise point positioning
errors
stability
accuracy
