Feasibility of modifying the high resolution infrared radiation sounder (HIRS/2) for measuring spectral components of Earth radiation budget
Abstract
The concept of adding four spectral channels to the 20 channel HIRS/2 instrument for the purpose of determining the origin and profile of radiant existence from the Earth's atmosphere is considered. Methods of addition of three channels at 0.5, 1.0 and 1.6 micron m to the present 0.7 micron m visible channel and an 18-25 micron m channel to the present 19 channels spaced from 3.7 micron m to 15 micron m are addressed. Optical components and physical positions were found that permit inclusion of these added channels with negligible effect on the performance of the present 20 channels. Data format changes permit inclusion of the ERB data in the 288 bits allocated to HIRS for each scan element. A lamp and collimating optic assembly may replace one of the on board radiometric black bodies to provide a reference source for the albedo channels. Some increase in instrument dimensions, weight and power will be required to accommodate the modifications.
- Publication:
-
Final Report ITT Aerospace/Optical Div
- Pub Date:
- August 1980
- Bibcode:
- 1980itt..rept.....K
- Keywords:
-
- Atmospheric Radiation;
- Earth Radiation Budget;
- Earth Radiation Budget Experiment;
- High Resolution;
- Infrared Scanners;
- Revisions;
- Sounding;
- Beam Splitters;
- Channels (Data Transmission);
- Radiant Cooling;
- Tiros N Series Satellites;
- Wavelengths;
- Spacecraft Instrumentation