LONG WAVELENGTH IR BACKGROUND DISCRIMINATION STUDY
Abstract
This report describes the analysis and test results obtained with an experimental system under a Long Wavelength Infrared Background Discrimination Study. This study concentrated on the use of long, narrow mercury-doped germanium detectors arranged in a chevron pattern to cover the 8- to 13-micron region. It represents the second phase of a study which had previously investigated the same background discrimination technique using gold-doped germanium detectors in the 3- to 7.5micron region. The technique to discriminate against the background signals uses three approaches: (1) small, narrow detectors to reduce the acceptance angle of background radiation; (2) pulse width discrimination circuitry to eliminate noise or background-generated pulses too wide or too narrow to qualify as targets; and (3) coincidence circuitry which requires eligible targets to be present on both detectors of a chevron pair within the transit time of the target image across these two detectors. The results indicated that the technique is applicable to the 8- to 13-micron region as well as the 3- to 7.5micron region. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1964
- Accession Number
- AD0350876
Entities
Organizations
- Glenn L. Martin Company