SPOT HRVIR - A significant improvement of high resolution visible SPOT camera to IR wavelengths
Abstract
Since March 1986, the SPOT-HRV cameras have been imaging the earth in a 10-m-resolution panchromatic mode and three 20-m-resolution spectral modes all in the visible and NIR wavelengths. The interest of MIR imaging for observing vegetation has increased in the past, and the implementation of a 1.6-micron band was decided by CNES for SPOT 4. A new 3000-element detector matrix had to be developed. In parallel, the focal plane of the previous HRV cameras has been completely redesigned, and the video electronics has also been significantly improved, taking into account both some problems identified on SPOT 1 in orbit and the implementation of the MIR band. A significant change in integration and test is introduced by the operating temperature of the MIR detectors (to be accurately controlled at 5 C), and a calibration of the whole instrument in vacuum is foreseen.
- Publication:
-
Malaga International Astronautical Federation Congress
- Pub Date:
- October 1989
- Bibcode:
- 1989mala.iafcQ....J
- Keywords:
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- Cameras;
- Infrared Imagery;
- Remote Sensing;
- Spaceborne Photography;
- Calibrating;
- Design Analysis;
- Spot (French Satellite);
- Instrumentation and Photography