Abstract
Current navigation systems have a number of drawbacks including no cross-line resolution in terrain-aided navigation; scene matching affected by seasonal changes; terrain-aided navigation and synthetic aperture radar (SAR)-aided navigation system cannot adapt to rugged terrain. Therefore, this study proposes an integrated interferometric SAR-aided inertial navigation system (InSAR/INS) based on interferogram matching. Terrain undulation and platform attitude can be reflected in the interferometric phase; hence, interferogram matching can provide location shift information. The authors introduce InSAR/INS processing flow, interferogram matching theory, and attitude and position inversion models. Experimental results verify that the proposed approach inverses attitude and position with high precision, and confirm the validity of the proposed InSAR/INS approach.
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