国家自然科学基金11673050,41674041,11403112;国家 863 计划2014AA123102;上海市空间导航与定位技术重点实验室基金ZZTX-201401The National Natural Science Foundation of China NSFC.11673050,41674041,11403112;The National High-tech Research and Development Program of China 863 Program2014AA123102;The Opening Project of Shanghai Key Laboratory of Space Navigation and Positioning TechniquesZZTX-201401