The synergetic use of optical (SPOT stereo images) and radar (interferometric SAR images) data for DEM generation is addressed. The paper presents a complete interferometric SAR (InSAR) procedure and investigates the potentiality of SPOT data to support such a procedure and to improve the quality of the terrain surface reconstruction using a flexible data fusion approach.
Michele Crosetto, Michele Crosetto,
"Fusion of optical and radar data for terrain surface reconstruction", Proc. SPIE 3497, SAR Image Analysis, Modeling, and Techniques, (20 November 1998); doi: 10.1117/12.331351; https://doi.org/10.1117/12.331351