Multichannel Infrared Receiver Performance.
Abstract
The use of passive electro-optical sensors in military systems has received increased emphasis in recent years. In particular, passive infrared sensors could be used in an infrared airborne threat warning receiver. The performance of an optical receiver designed to detect a threat by taking advantage of the spectral signature of the threat is presented. The receiver is based upon a statistical model which represents the infrared field as a Gaussian random process whose moments depend upon the threat and background characteristics. The optimal Bayes/Neyman-Pearson receiver structure for an M spectral channel, N sequential look scanning receiver is presented and two practical suboptimal receiver structures are developed and compared with two ad-hoc linear processor structures. The results indicate that the approximate suboptimal receiver structures and the two ad-hoc linear receiver structures have identical performance. The results also show that receiver performance depends upon the difference between the square roots of the hypothesis dependent mean to variance ratios and the ratio of variances, and that receiver performance improves as the number of receiver channels and/or the number of looks increase. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1977
- Accession Number
- ADA052937
Entities
People
- Stephen J. Dunning
Organizations
- Air Force Institute of Technology