Theoretical analysis of the effect of meteorologic factors on passive ranging technology based on oxygen absorption spectrum

Abstract

The passive ranging technology can be used to accurately estimate range from sensor to target. It can simultaneously carry out detecting, tracking, locating and alarming of boost phase missiles and rocket planes. The Oxygen absorption band, located in visible light and near infrared band, has unique spectral lineshape, independent absorption spectrum, large dynamic range and relatively smaller absorption characteristic, and then could carry out the high precision and stability distance measuring for auto-power aerial vehicle. In order to discuss the effect of different meteorologic factors on this technique, this paper researched the Oxygen absorption spectral characteristics and introduced the basic principle of the passive ranging in detail, and then theoretically analyzed and numerically simulated the effect of the meteorologic factors to passive ranging technology. Research result shows that the passive ranging based on the Oxygen absorption spectrum has good adaptability and stability, and the worsening of meteorologic factors only reduces the efficient measurement range of the system, and then does not have any effect for ranging accuracy in the validity range. The result will provide a certain amount of theoretical and experimental basis for the research and application of the passive ranging based on Oxygen absorption spectrum.