The ASF RADARSAT-1 Interferometric Baseline Catalog

Increased use of RADARSAT-1 fine beam and standard beam data for interferometric projects has intensified the growing demand for baseline information corresponding to data acquired over numerous regions of interest to researchers. ASF has recently developed an interferometric baseline catalog for RADARSAT-1 data using metadata contained in the scan results file, generated when the raw telemetry signal is captured to a digital file.

Baseline information for the new catalog is estimated on an ASF frame basis using state vectors, the Doppler centroid and the slant range. The baselines for existing image pairs in the ASF archive up to RADARSAT-1 orbit 45000 are now stored in a database that serves as the backbone of a web interface found at http://www.asf.alaska.edu/baselines/.

The archive at ASF contains some 2-million suitable image pairs for interferometric use. Orbits containing interferometric frames are separated in the baseline catalog by beam mode, fine and standard beam, and are organized by month and year of acquisition.

Further details about the development of the catalog at ASF are described in the paper Development of a RADARSAT-1 Interferometric Baseline Catalog presented by Rudi Gens at the IGARSS 2004 conference in Anchorage, Alaska.

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