Design of cooperative matched filter for detection of chemical agents

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A matched filter (MF) is one of the most widely used detectors for the detection of chemical agent (CA) clouds in the passive hyperspectral imaging system. To improve the detection performance of the MF, a linear cooperation scheme that allocates cooperation coefficients to the spectra of the neighbouring pixels is proposed. The optimal cooperation coefficients, which removes noise signatures whilst minimising the distortion of CA signatures, are acquired by finding the maximum likelihood estimator of the cooperation coefficients. It is proved that a moving average scheme that assigns the same coefficients is the optimal cooperation scheme. Finally, a cooperative MF with the optimal cooperation scheme is designed. It is demonstrated that the proposed cooperative MF is capable of robust detection performance via outdoor experiments with actual CA data measured by a Bruker HI-90 instrument.
Publisher
INST ENGINEERING TECHNOLOGY-IET
Issue Date
2021-03
Language
English
Article Type
Article
Citation

ELECTRONICS LETTERS, v.57, no.5, pp.216 - 218

ISSN
0013-5194
DOI
10.1049/ell2.12088
URI
http://hdl.handle.net/10203/282261
Appears in Collection
EE-Journal Papers(저널논문)
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