【作者】 涂锐； 黄观文； 张勤； 王利；

【Author】 Tu Rui~1,Huang Guanwen~1,Zhang Qin~1,Wang Li~1 1.College of Geology Engineering and Geomatics,Chang’an University,Xi’an,Shanxi,China

【机构】 长安大学地质工程与测绘学院；

【摘要】 针对单站模糊度浮点解精密单点定位技术存在收敛时间长、精度不稳定的局限性和我国越来越密集的CORS站网建设背景,本文探讨了一种基于CORS站改正的模糊度固定PPP算法。该算法既可以利用CORS站提供的改正信息提高自身观测值精度,并且消除了卫星的初始相位偏差,在接收机初始相位偏差被模糊度吸收的情况下,恢复了模糊度的整周特性,采用算法将其固定,可以有效地提高定位精度,缩短收敛时间。更多还原

【Abstract】 In precise point positioning technology,float solutions of single station needs a long-time for initialization and also has a low instability of accuracy.On the background of China’s increasingly intensive CORS station nets construction,this paper discussed a new PPP algorithm of ambiguity fixed based on CORS station correction.We can use CORS stations’ correct informations to improve the user ’s observation accuracy,also the satellites’ initial phase biases can be eliminated,while the receiver initial phase biases absorbed by receiver clock,the ambiguity can be recoveryed to integer and fixed.The new algorithm can effectively improve positioning accuracy,shorten the initialization time.更多还原