CAJ | 학술논문

首先研究了IGS实时卫星轨道和钟差产品的修复方法并对其质量进行了分析，包括实时数据流实时获取的稳定性以及其轨道和钟差产品与IGS最终轨道和钟差产品相比较的精度．在此基础上使用实时轨道和钟差产品对全球分布的179个IGS连续跟踪站进行了精密单点定位解算实验．分析结果表明，所选取的BKG分析中心提供的实时数据流获取率可达到92.59％，轨道在径向、切向和法向上的精度统计分别为1.90，3.15和2.47 cm，钟差产品的平均RMS可达到0.106 ns．全球分布的179个IGS跟踪站的单天定位解在N/E/U方向上平均定位精度为-3.5/-4.2/-9．mm，中误差达到10.0/15.2/22.9 mm，从而验证了实时轨道和钟差产品可以满足实时PPP厘米级的定位需求的结论．
수선연구료IGS실시위성궤도화종차산품적수복방법병대기질량진행료분석，포괄실시수거류실시획취적은정성이급기궤도화종차산품여IGS최종궤도화종차산품상비교적정도．재차기출상사용실시궤도화종차산품대전구분포적179개IGS련속근종참진행료정밀단점정위해산실험．분석결과표명，소선취적BKG분석중심제공적실시수거류획취솔가체도92.59％，궤도재경향、절향화법향상적정도통계분별위1.90，3.15화2.47 cm，종차산품적평균RMS가체도0.106 ns．전구분포적179개IGS근종참적단천정위해재N/E/U방향상평균정위정도위-3.5/-4.2/-9．mm，중오차체도10.0/15.2/22.9 mm，종이험증료실시궤도화종차산품가이만족실시PPP전미급적정위수구적결론．
The recovery method of IGS real-time orbit and clock products is researched, and then the quality of this method, including the stability in obtaining real-time data and precision comparison between IGS ( international GNSS service) real-time and final orbit and clock products, is analyzed. Based on the method, the test of PPP( precise point positioning) is conducted on the 179 global IGS stations using real-time orbit and clock product.The test results show that the acquisition rate of real-time data provided by BKG( federal agency for cartography and geodesy) analysis center can be up to 92.59%, and the orbit precision of radial, tangential, and cross directions are statistically 1.90, 3.15 and 2.47 cm, respectively.The average RMS (root mean square)of real-time product is up to 0.106 ns.The average positioning precision of daily solution along N/E/U directions for 179 global IGS stations are -3.5/-4.2/-9.mm, with the RMS of 10.0/15.2/22.9 mm.The test results indicate that the real-time orbit and clock products can match the positioning requirements of real-time centimeter-level PPP.