Computer Science – Sound
Scientific paper
Oct 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1107...51k&link_type=abstract
IN: Infrared detectors, focal plane arrays, and imaging sensors; Proceedings of the Meeting, Orlando, FL, Mar. 30, 31, 1989 (A90
Computer Science
Sound
Infrared Imagery, Infrared Radiometers, Infrared Scanners, Infrared Spectrometers, Meteosat Satellite, Payloads, Thermal Mapping, Angular Resolution, Depth Measurement, Environmental Monitoring, Imaging Techniques, Satellite Sounding, Spin Stabilization
Scientific paper
The technical concepts of a visible/infrared imaging radiometer and an infrared vertical sounder (payloads of the Meteosat second generation) are described. All instruments are assumed to be operated on a 3-axis stabilized satellite, while the current system is a spin stabilized satellite. The imaging radiometer has 2 visible and 6 infrared channels for cloud tracking and sea surface/cloud top temperature measurements (compared to currently 3), partly split channels at reduced bandwith and 2 km instantaneous field-of-view (angular resolution). The proposed solution of a hybrid scan system, involving 2-axis mechanical scan combined with a north/south fine scan (by means of short detector arrays), is presented. The infrared sounder is required to scan the earth disk in 16 km instantaneous field-of-view (angular resolution) intervals and 18 channels for water vapor and temperature profiling. The proposed technical concept uses a spectrometer for spectral channel multiplexing rather than a filter wheel as the standard principle for such instruments. It is also forseen for the GOES-Next. Both instruments provide promising performance data. Imager can be used in the fields of oceanography, vegetation mapping, radiation budget determination for climatology and environmental monitoring.
Bézy Jean-Loup
Blechinger Fritz
Kunkel B.
Lobb Dan R.
Ratier Guy
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