Evaluation of Platinum Silicide and Indium Antimonide as Detector Materials for Space-Based Remote Sensing in the 3.0-to-5.0 Micrometer Wavelength Band
Abstract
Platinum Silicide and Indium Antimonide are evaluated as detector materials for space-based remote sensing of man-made ground targets in the 3.0- to-5.0 micron band. The evaluation compares a generic target to each of four backgrounds including vegetation, snow, sand, and soil. A spectral count rate for the target and each background is calculated taking into account the material's quantum efficiency, the source's reflectivity/emissivity, and the atmospheric transmission. A baseline case and nine excursions were examined. The baseline case has the target and backgrounds at a temperature of 298 K. The atmospheric transmission used in this case is for a rural setting with a 23 km visibility and a vertical path through the atmosphere. The nine additional cases are produced by varying the baseline one parameter at a time - target and background temperatures, target reflectivity, and atmospheric humidity. Based on these cases, an evaluation was made of the remote sensing potential of each material as the various parameters were varied. In addition, an assessment was made of the multiband remote sensing possibilities in the 3.0-to-5.0 micron band available for each material. Theses. (rrh)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1989
- Accession Number
- ADA216182
Entities
People
- Ralph R. Sandys
Organizations
- Air Force Institute of Technology