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Conference Paper

Impact of precise orbits on SAR Interferometry

Authors

Reigber,  C.
External Organizations;

Xia,  Y.
External Organizations;

/persons/resource/charly

Kaufmann,  Hermann
1.4 Remote Sensing, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/fhm

Massmann,  Franz-Heinrich
Deutsches GeoForschungsZentrum;

Timmen,  L.
External Organizations;

Bodechtel,  J.
External Organizations;

Frei,  M.
External Organizations;

, 

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Citation

Reigber, C., Xia, Y., Kaufmann, H., Massmann, F.-H., Timmen, L., Bodechtel, J., Frei, M. (1996): Impact of precise orbits on SAR Interferometry, Proc. ESA-Fringe Workshop on Applications of ERS SAR Interferometry (Zürich, Switzerland).


https://gfzpublic.gfz-potsdam.de/pubman/item/item_227235
Abstract
For repeat pass SAR interferometry, two precision orbit products from ESA (processed at GFZ/D-PAF, Oberpfaffenhofen) are available: ERS-1/2.ORB.PRC"s and ERS-1/2.ORB.PRL"s. The conversion of interferogram phases to absolute surface heights require a relative baseline accuracy of 5 cm or even better. In a case study, the preliminary (PRL) and precise (PRC) orbits are used to derive DEMs. The results are compared with existing DTMs. In the test area in Thuringia (Germany), corner reflectors allow an additional accuracy assessment. The impact of orbit uncertainties on D-INSAR deformation analysis is less critical and the PRC"s already fulfill the accuracy demands. This is demonstrated by an example from the Dead Sea transform zone in Israel.