1. Engineer, Information Engineering Univ., Zhengzhou 450001, China (corresponding author). ORCID: .
2. Professor, Information Engineering Univ., Zhengzhou 450001, China.
3. Engineer, Information Engineering Univ., Zhengzhou 450001, China.
4. Engineer, Xi’an Univ. of Science and Technology, Xi’an 710054, China.
5. Associate Professor, Information Engineering Univ., Zhengzhou 450001, China.
6. Senior Engineer, Beijing Surveying and Mapping Company, No. 22, Shijingshan Rd., Shijingshan, Beijing 100042, China.
7. Engineer, Shanghai Key Laboratory of Space Navigation and Positioning Techniques, Shanghai Observatory, Chinese Academy of Sciences, Shanghai 200030, China.