The publication of this book has been funded supports of the National Key R&DProgram of China (2018YFB0505103), the National Natural Science Foundation of China(61561016, 61861008)?also the funding from the Guangxi Zhuang Autonomous Region(AC16380014, AA17202048, AA17202033), the Natural Science Foundation ofGuangxi(2018JJA170090), GuangXi Key Laboratory of Precision Navigation Technologyand Application, Guilin University of Electronic Technology (No.DH201509), the keylaboratory of satellite navigation and location-based services.