1. School of Instrument Science and Opto-Electronics Engineering, Beihang University 1 , Beijing 100191, China
2. Zhejiang Provincial Key Laboratory of Ultra-Weak Magnetic-Field Space and Applied Technology, Hangzhou Innovation Institute, Beihang University 2 , Hangzhou 310051, China
3. Hefei National Laboratory 3 , Hefei 230088, China
4. Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology, Ministry of Education, School of Instrument Science and Engineering, Southeast University 4 , Nanjing 210096, China