Passive Ranging of Dynamic Rocket Plumes Using Infrared and Visible Oxygen Attenuation
Robert A. Vincent
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Passive Ranging of Dynamic Rocket Plumes Using Infrared and Visible Oxygen Attenuation

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Atmospheric oxygen absorption bands in observed spectra of boost phase missiles can be used to accurately estimate range from sensor to target. This work compares two oxygen absorption bands in the near-infrared (NIR) and visible (Vis) spectrum, centered at 762nm and 690 nm, to passively determine range. Spectra were observed from static tests of both surface-to-air missile simulators at 405m range and a full-scale solid rocket motor at 900m range. The NIR O2 band provided range estimates accurate to within 3% for both tests, while the Vis O2 band had range errors of 77% and 15 %, respectively...