Geocoding techniques for interferometric and polarimetric airborne SAR data

Marc Bara; Antoni Broquetas; Rolf Scheiber; Ralf Horn

doi:10.1117/12.410658

21 December 2000 Geocoding techniques for interferometric and polarimetric airborne SAR data

Marc Bara, Antoni Broquetas, Rolf Scheiber, Ralf Horn

Proceedings Volume 4173, SAR Image Analysis, Modeling, and Techniques III; (2000) https://doi.org/10.1117/12.410658
Event: Europto Remote Sensing, 2000, Barcelona, Spain

Abstract

This paper presents a detailed study of geocoding algorithms for interferometric SAR data from airborne sensors. They allow to relate a phase value in slant-range coordinates to a position in a cartesian reference system and, hence, a height value on a topographic map. Two basic approaches, which follow forward or backward strategies, are proposed in this paper. Another aspect is related to the kind of the acquisition mode: single- or repeat-pass. In general, a wide variety of techniques and combinations (single or repeat pass, direct or indirect transformations, one or two steps, zero-Doppler or squinted geometry) exist. This paper reviews the state-of-the-art of these combinations, as well as their evaluation, comparison and discussion by means of real data from the DLR’s E-SAR system. The discussion includes the problem of polarimetric data geocoding. In that case, the map-projected height information derived from a X-band single-pass system is used to geocode non-interferometric channels (for example polarimetric L-band data).

Citation Download Citation

Marc Bara, Antoni Broquetas, Rolf Scheiber, and Ralf Horn "Geocoding techniques for interferometric and polarimetric airborne SAR data", Proc. SPIE 4173, SAR Image Analysis, Modeling, and Techniques III, (21 December 2000); https://doi.org/10.1117/12.410658

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