Mathematics – Logic
Scientific paper
Nov 1961
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1961nasa.reptt....b&link_type=abstract
Technical Report, NASA-TN-D-1096
Mathematics
Logic
Meteorological Satellites, Thermal Radiation, Tiros 2 Satellite, Reflected Waves, Absorption Spectra, Infrared Radiation, Television Cameras, Temperature Measurement, Thermistors
Scientific paper
TIROS II contains instrumentation for measuring infrared and reflected ssolar radiation from the earth and its atmosphere. A medium resolution sscanning radiometer and a low resolution non-scanning radiometer are semployed. The satellite's spin provides the scan line of the medium sresolution radiometer which is then advanced by the orbital motion. The sspatial resolution is about 40 miles square when the earth directly sbeneath the satellite is viewed. The five channels employ bolometer sdetectors and filters to limit the spectral responses to five bands: 6 sto 6.5 microns, 8 to 12 microns, 0.2 to 6 microns, 8 to 30 microns, and s0.55 to 0.75 microns. These five bands study, respectively: radiation in sthe water vapor absorption band; day and nighttime cloud cover; albedo; sthermal radiation; and visual maps for comparison with satellite vidicon spictures. The low resolution non-scanning radiometer measures the searth's black-body temperature and albedo. Its field when viewing sdirectly below is a circle of 450 miles diameter, covering part of each sframe from the wide-field television camera. This radiometer consists of stwo thermistors, each in the apex of a reflective cone which provides soptical gain. One thermistor is black and responds to both thermal and sreflected solar radiation. The second responds to thermal but reflects ssolar radiation. The design, calibration, performance, and data sreduction for both systems are discussed herein.
Bandeen William R.
Hanel Rudolf A.
Licht John
Stampfl R. A.
Stroud W. G.
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