Wide Area Guidance and Control Program: Investigation of Scanning IR Seeker Performance in Background Clutter.
Abstract
The clutter-limited performance of an advanced, scanning infrared seeker is investigated. A survey of infrared imagery lists data available for this investigation. Requirements of the study restrict the choice of imagery; three background-image data sets from Air Force and Navy collection programs are used. Artifacts in the selected data are examined and correction techniques are developed. The images are characterized by radiance statistics and power spectral densities. Detailed information on the data collection instruments and the scenes used are presented in appendixes. Seeker performance is determined using a number of techniques. Performance is measured both in terms of the required target irradiance and the false-alarm rate produced by the background scene. The three techniques compared are a matched-filter analysis using the image power spectral densities, a one-dimensional digital filter that approximates the matched filter, and the digital filter followed by a pulse-width discriminator. Finally, a cross-scan comparison between the output of adjacent channels is shown to be useful in further rejecting extended background features. Implementation of the final algorithm in a missile seeker is discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1986
- Accession Number
- ADA179908
Entities
People
- L. M. Howser
Organizations
- Johns Hopkins University