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TitleStability of Amazon Backscatter at C-band: Spaceborne Results from ERS-1/2 and RADARSAT-1
DownloadDownloads (Preprint)
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorHawkins, R K; Attema, E P W; Crapolicchio, R; Lecomte, P; Closa, J; Meadows, P J; Srivastava, S K
SourceProceedings of CEOS Workshop, Toulouse, France, October 26-29; 1999 p. 11, Open Access logo Open Access
Alt SeriesEarth Sciences Sector, Contribution Series 20042791
Mediapaper; on-line; digital
File formatpdf
Released1999 01 01
AbstractThis paper looks at the question of the temporal and spatial stability of the Amazon rainforest as a distributed target calibration source. The Amazon rainforest has been established by a number of investigators as a useful means of determining the in-orbit antenna pattern of spaceborne SAR and scatterometers. It was used for ERS-1 and ERS-2, J-ERS-1, and RADARSAT-1 providing a large isotropic backscattering reference over a wide range of incidence angle. In this paper, we look at a long series of results from ERS and RADARSAT to examine the temporal and spatial stability of this target class. These properties are supported by a simple radar signature model.

In any radar measurement, uncompensated variation in the sensor may be included with changes in target backscatter. Results from independent measurements from precision transponders are used to assess the size and characteristics of these inherent systematic variations before discussing the implications of the Amazon backscatter measurements. The implications of the results for future missions are also explored.


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