GPS卫星可视性研究  

Research on Visibility of GPS Satellite

作　　者：高建东[1] 邢尹 GAO Jiandong;XING Yin(Jiangsu Institute of Surveying and Mapping Engineering,Nanjing 210013,China;School of Geographic Science and Surveying Engineering,Suzhou University of Science and Technology,Suzhou 215009,China)

机构地区：[1]江苏省测绘工程院,江苏南京210013 [2]苏州科技大学地理科学与测绘工程学院,江苏苏州215009

出　　处：《河南科技》2023年第6期18-22,共5页Henan Science and Technology

摘　　要：【目的】研究相对于地面观测点的GPS卫星星座的可视性,从而改善观测数据质量,提高测量精度。【方法】本研究基于标准RINEX数据,通过假设卫星开普勒参数,拟定地面观测点及观测时间,并根据全球导航卫星系统定位原理来计算各GPS卫星坐标及相对于地面观测点的高度角,从而筛选出符合观测条件的GPS卫星。【结果】在计算出坐标及相对于地面观测点的方位角和高度角的24颗GPS卫星中,选出7颗高度角大于15°的卫星作为有效的观测卫星。【结论】本研究所述的方法可按照一定原则对GPS卫星星座进行筛选,从而获取质量更佳的卫星观测数据,为相关研究提供参考。[Purposes] This paper study the visibility of GPS satellite constellation relative to ground observation points,so as to improve the quality of observation data and improve the measurement accuracy.[Methods] In this study,based on the standard RINEX data and by assuming the Kepler parameters of the satellite,the ground observation points and observation time are proposed,and the GPS satellite coordinates and the elevation angle relative to the ground observation points are calculated according to the positioning principle of the global navigation satellite system,so as to select the GPS satellite that meets the observation conditions.[Findings] In accordance with the coordinates of 24 GPS satellites and the azimuth and elevation angles relative to the ground observation points,7 satellites with an elevation angle greater than 15° are selected as effective observation satellites.[Conclusions] The method described in this study can sift the GPS satellite constellation according to certain principles,so as to obtain better quality satellite observation data and provide reference for related research.

关 键 词：GPS RINEX 卫星可视性 卫星高度角 

分 类 号：P228[天文地球—大地测量学与测量工程]