Glacier motion estimation using SAR offset-tracking procedures

摘要: Two image-to-image patch offset techniques for estimating feature motion between satellite synthetic aperture radar (SAR) images are discussed. Intensity tracking, based on intensity cross-correlation optimization, and coherence used to estimate the movement of glacier surfaces two SAR in both slant-range azimuth direction. The accuracy application range methods examined case surge Monacobreen Northern Svalbard 1992 1996. Offset-tracking procedures an alternative differential interferometry estimation when is limited by loss coherence, i.e. rapid incoherent flow large acquisition time intervals images. In addition, offset-tracking procedure direction may be combined with order retrieve a two-dimensional displacement map data only one orbit configuration available.