| Title | Plans for radarsat image data calibration |
| |
| Author | Srivastava, S K; Shepherd, N W; Lukowski, T I; Hawkins, R K |
| Source | Advances in Space Research vol. 17, no. 1, 1996 p. 89-96, https://doi.org/10.1016/0273-1177(95)00453-L |
| Year | 1996 |
| Alt Series | Natural Resources Canada, Contribution Series 20181902 |
| Publisher | Elsevier BV |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Subjects | geophysics; remote sensing |
| Program | Canada Centre for Remote Sensing Divsion |
| Abstract | RADARSAT, the first Canadian earth observation satellite, is scheduled for launch in 1995. The mission is to provide to users calibrated C-band HH polarized Synthetic Aperture Radar (SAR) data products
for five years, at different incidence angles, resolution and area coverage. The SAR is also designed to operate in the ScanSAR mode by combining different elevation beams. Emphasis in the RADARSAT Program is provision of operationally calibrated
products which insures targets can be compared radiometrically within each scene and between scenes. In order to maintain end-to-end radiometric quality for the mission life, plans are to perform external calibration routinely using precision
transponders and homogeneous targets. The calibration data will be analyzed off-line in the calibration workstation and resulting calibration parameters update will be provided to the ground processor to generate calibrated products. The short term
variations in the gain of the sensor electronics will be tracked by the on board internal calibration system and these calibration data will be transmitted to the ground with the radar signal data. This allows the processor to automatically
compensate for radar gain variations in between the external calibration periods and thus maintain the required radiometric accuracy. This paper describes the calibration requirements for the mission and plans for internal and external calibrations.
An outline of the image quality management is also presented. |
| GEOSCAN ID | 312257 |
|
|