Band optimization method for airborne point target detection

Shunxing Xu; Minpu Qiu

doi:10.1117/12.2617545

15 February 2022 Band optimization method for airborne point target detection

Shunxing Xu, Minpu Qiu

Proceedings Volume 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021); 121665J (2022) https://doi.org/10.1117/12.2617545
Event: Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 2021, Hong Kong, Hong Kong

Abstract

In order to improve the signal-to-noise ratio(SNR) of point target detection in the air, this paper takes two types of typical aircraft as targets, fully considers the various influencing factors on the detection link, establishes the SNR model, and optimizes the detection spectrum in the range of 2-12μm. The spectrum optimization method is to select the center wavelength and bandwidth with the SNR as the objective function. The first step is to calculate the SNR-central wavelength curve in the range of 2-12μm when Δλ=0.02μm to determine the center wavelength position of the peak SNR. The second step is to change the bandwidth and calculate the band with the largest SNR near the selected center wavelength. The optimal spectrum in a typical infrared point target detection scene is calculated through an example of spectrum selection, and the influence of target characteristics and background characteristics on the results of spectrum optimization is analyzed. Finally, the image of the point target in the air taken by the GF-5 full-spectrum spectral imager is used to verify the SNR model and the method of spectrum optimization. The results show that the model of the SNR and the method of spectrum optimization are effective.

Citation Download Citation

Shunxing Xu and Minpu Qiu "Band optimization method for airborne point target detection", Proc. SPIE 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 121665J (15 February 2022); https://doi.org/10.1117/12.2617545

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KEYWORDS

Signal to noise ratio

Target detection

Imaging systems

Sensors

Optimization (mathematics)

Infrared radiation

Transmittance

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