Short-range experiment of passive ranging by oxygen absorption

Zongqun, 闫宗群 Yan; Bingqi, 刘秉琦 Liu; Wenshen, 华文深 Hua; Yu, 张宇 Zhang

doi:10.3788/ope.20132111.2744

光学精密工程

2013

DOI: 10.3788/ope.20132111.2744

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Short-range experiment of passive ranging by oxygen absorption

闫宗群 Yan Zongqun¹,

刘秉琦 Liu Bingqi²,

华文深 Hua Wenshen³

et al.

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Passive ranging using a filter-based non-imaging method based on oxygen absorption

Liu

Yan³

2017

Appl. Opt.

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To solve the problem of poor real-time measurement caused by a hyperspectral imaging system and to simplify the design in passive ranging technology based on oxygen absorption spectrum, a filter-based non-imaging ranging method is proposed. In this method, three bandpass filters are used to obtain the source radiation intensities that are located in the oxygen absorption band near 762 nm and the band's left and right non-absorption shoulders, and a photomultiplier tube is used as the non-imaging sensor of the passive ranging system. Range is estimated by comparing the calculated values of band-average transmission due to oxygen absorption, τ , against the predicted curve of τ versus range. The method is tested under short-range conditions. Accuracy of 6.5% is achieved with the designed experimental ranging system at the range of 400 m.

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Passive ranging using a filter-based non-imaging method based on oxygen absorption

Liu

Yan³

2017

Appl. Opt.

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Influence of background radiation on the precision of passive ranging

Zhang¹,

Liu²,

Yan³

et al. 2015

Acta Phys. Sin.

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Experimental program is designed to analyze the influence of background radiation on the accuracy of passive ranging based on oxygen spectral absorption; an acousto-optic tunable hyper spectral imaging spectrometer is used as the measuring device and a halogen light as the target. Firstly, the basic principles and experimental program of passive ranging technology based on oxygen absorption are introduced; then the halogen light spectral distribution at different distances during the night is collected using the acousto-optic tunable hyper spectral imaging spectrometer. Oxygen absorption rate is calculated and the relationship model between the oxygen absorption rate and the path is established according to the principle of oxygen spectrum absorption passive ranging. Then the oxygen absorption rate of the target is collected and calculated at the distance of 2360 m for different time. The measuring ranges during the day are solved by the model and the errors are analyzed, the influence of background radiation on the passive ranging is gained finally. Results show that according to the model, the maximum ranging error is 6.74% during the daytime, and the error becomes smaller with the elevation angle of the sun becoming smaller and the background darker. The results give 1.10% ranging error during the nighttime.

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Short-range experiment of passive ranging by oxygen absorption

Cited by 2 publications

References 0 publications

Passive ranging using a filter-based non-imaging method based on oxygen absorption

Passive ranging using a filter-based non-imaging method based on oxygen absorption

Influence of background radiation on the precision of passive ranging

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