INFRARED HORIZON SENSOR ACCURACY IN THE ATMOSPHERIC ABSORPTION BANDS
AEROSPACE CORP EL SEGUNDO CA
Pagination or Media Count:
An analysis has been made of atmospheric radiance data which were computed by the Weather Bureau based on a variety of atmospheric models. Narrow spectral regions, located within the carbon dioxide absorption band centered at 15 microns, have been considered. It is shown that a spectral band approximately 1.7 microns wide centered very close to the absorption band shows promise, when the data is properly processed, of providing 1 Sigma horizon sensor accuracies of about 0.05 degrees. A two color technique involving the use of two spectral regions in the vicinity of the CO2 absorption band is discussed. The possibility of using the 28.6 to 40.0 micron spectral region within the broad rotational water vapor absorption band is also considered.
- Direction Finding