摘要
现阶段整星座低轨卫星观测数据的缺失制约了LEO卫星导航增强研究,针对该问题,本文设计了LEO导航增强星座地基观测仿真系统,构建生成了LEO星座伪距和载波相位观测值的仿真模型;介绍了仿真系统设计流程和架构、仿真地基LEO观测数据;使用RTKLIB进行了标准单点定位(SPP)和精密单点定位(PPP)解算,验证了仿真系统搭建的正确性,以及伪距和载波观测值仿真的正确性。结果表明,相较于只考虑几何距离的地基观测数据,该系统考虑各误差模型后观测数据置信度高,可用于支撑LEO导航增强星座定位研究。
Aiming at the restriction of LEO satellite navigation enhancement research due to the lack of the observation data of LEO constellations nowadays, the ground-based observation simulation system of LEO navigation enhanced constellation is designed. Firstly, the observation model of the pseudo-range and the carrier phase are derived, then the process and architecture of the simulation system are introduced, finally the SPP and PPP are calculated respectively based on the simulated ground-based LEO observation data. The correctness of the simulation system and the accuracy of the simulated pseudo range and carrier observation data are verified. The results show that, after considering various error models, the observation data simulated by the designed system owns a higher confidence compared with the ground-based observation data when only the geometric distance is considered. The system can be used to support the LEO navigation enhanced constellation positioning research.
作者
周全
张扬
李子申
韩保民
孟昊
董孝松
郭振华
ZHOU Quan;ZHANG Yang;LI Zishen;HAN Baomin;MENG Hao;DONG Xiaosong;GUO Zhenhua(School of Architectural Engineering,Shandong University of Technology,Zibo 255000,China;Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China;Shandong Gold Mining(Linglong)Ltd.,Zhaoyuan 265406,China)
出处
《测绘通报》
CSCD
北大核心
2022年第2期110-115,共6页
Bulletin of Surveying and Mapping
基金
国家自然科学基金(41074001)
山东省专业学位研究生教学案例库建设项目(SDYAL21132)。
