Performance Study of INS/GNSS/SAR Integrated Navigation System and Its Reduced-Order Model
组合导航系统INS/GNSS/SAR及其降阶模型性能的研究

This paper introduces a full_order inertial navigation system(INS)/global navigation satellite system(GNSS)/synthetic aperture radar(SAR) integrated navigation system and its reduced_order model. The computation time of Kalman filter for reduced_order model is decreased with little loss in accuracy. The simulation results prove that the reduced_order model can also provide satisfactory accuracy for aircraft navigation.