河南科技HenanScienceandTechnology电气与信息工程总第800期第6期2023年3月GPS卫星可视性研究高建东1邢尹2(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)摘要:【目的目的】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。关键词:GPS;RINEX;卫星可视性;卫星高度角中图分类号:P228文献标志码:A文章编号:1003-5168(2023)06-0018-05DOI:10.19968/j.cnki.hnkj.1003-5168.2023.06.003ResearchonVisibilityofGPSSatelliteGAOJiandong1XINGYin2(1.JiangsuInstituteofSurveyingandMappingEngineering,Nanjing210013,China;2.SchoolofGeographicScienceandSurveyingEngineering,SuzhouUniversityofScienceandTechnology,Suzhou215009,China)Abstract:[Purposes]ThispaperstudythevisibilityofGPSsatelliteconstellationrelativetogroundob⁃servationpoints,soastoimprovethequalityofobservationdataandimprovethemeasurementaccuracy.[Methods]Inthisstudy,basedonthestandardRINEXdataandbyassumingtheKeplerparametersofthesatellite,thegroundobservationpointsandobservationtimeareproposed,andtheGPSsatellitecoor⁃dinatesandtheelevationanglerelativetothegroundobservationpointsarecalculatedaccordingtothepositioningprincipleoftheglobalnavigationsatellitesystem,soastoselecttheGPSsatellitethatmeetstheobservationconditions.[Findings]Inaccordancewiththecoordinatesof24GPSsatellitesandtheazimuthandelevationanglesrelativetothegroundobservationpoints,7satelliteswithanelevationanglegreaterthan15°areselectedaseffectiveobservationsatellites.[Conclusions]Themethodde⁃scribedinthisstudycansifttheGPSsatelliteconstellationaccordingtocertainprinci...