Share Email Print
cover

Proceedings Paper

Passive ranging of boost-phase missiles
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The depth of absorption bands in observed spectra of distant, bright sources can be used to estimate range to the source. Previous efforts in this area relied on Beer's Law to estimate range from observations of infrared CO2 bands, with disappointing results. A modified approach is presented that uses band models and observations of the O2 absorption band near 762 nm. This band is spectrally isolated from other atmospheric bands, which enables direct estimation of molecular absorption from observed intensity. Range is estimated by comparing observed values of band-average absorption, (see manuscript), against predicted curves derived from either historical data or model predictions. Accuracy of better than 0.5% has been verified in short-range (up to 3km) experiments using a Fourier transform interferometer at 1cm-1 resolution. A conceptual design is described for a small, affordable passive ranging sensor suitable for use on tactical aircraft for missile attack warning and time-to-impact estimation. Models are used to extrapolate experimental results (using 1 cm-1 resolution data) to analyze expected performance of this filter-based system.

Paper Details

Date Published: 7 May 2007
PDF: 11 pages
Proc. SPIE 6569, Acquisition, Tracking, Pointing, and Laser Systems Technologies XXI, 65690G (7 May 2007); doi: 10.1117/12.719761
Show Author Affiliations
Michael Hawks, Air Force Institute of Technology (United States)
Glen Perram, Air Force Institute of Technology (United States)


Published in SPIE Proceedings Vol. 6569:
Acquisition, Tracking, Pointing, and Laser Systems Technologies XXI
Steven L. Chodos; William E. Thompson, Editor(s)

© SPIE. Terms of Use
Back to Top