| Title | Analytic Formulation of Spaceborne SAR Image Geocoding and Value-AddedProduct Generation Procedures Using Digital Elevation Data |
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| Author | Guindon, B; Adair, M |
| Source | Canadian Journal of Remote Sensing 18, 1, 1992 p. 2-12, https://doi.org/10.1080/07038992.1992.10855137 |
| Year | 1992 |
| Alt Series | Earth Sciences Sector, Contribution Series 20041064 |
| Alt Series | RESORS 1088502 |
| Publisher | Informa UK Limited |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Subjects | geophysics; remote sensing |
| Released | 2014 08 01 |
| Abstract | Because of the viewing geometry characteristics of spaceborne SARs carried by SEASAT, ERS-1, JERS-1, and RADARSAT, images from these sensors will exhibit significantly greater radiometric and geometric
sensitivity to local topographic relief than corresponding optical images from Landsat and SPOT sensors. It is imperative, therefore, that digital elevation models be an integral part of any SAR analysis capability. This paper presents a unified
analytic formulation of a simulation-based approach to spaceborne SAR analysis, including image geocoding and value-addedproduct generation to aid in subsequent scene interpretation. The concept of a topographic-scaling factor is proposed to quantify
the average level of geometric distortion in a SAR scene given a knowledge of the elevation variability over a site. A prototype software package based on these algorithms has been implemented on a low-cost personal computer platform and used to
geocode two example SEASAT SAR scenes that exhibit terrain-induced distortions on the scale of 1 km to 1.5 km. Final geocoding accuracies of 75 m to 150 m have been achieved using a 1:250 000-scale DEMs. |
| GEOSCAN ID | 217866 |
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