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Absorptive weak plume detection on Gaussian and non-Gaussian background clutter
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
For additive signals on Gaussian clutter, the optimal detector is a linear matched filter that is adapted to the known signal and the covariance of the background. This adaptive matched filter (AMF) is widely used for gas-phase plume detection, even though the effect of the plume on the background is not strictly additive. Here, a derivation of the matched filter for a strictly absorptive plume produces, in the weak plume limit, a quadratic filter. This quadratic matched filter is extended indoi:10.1109/jstars.2021.3093820 fatcat:ue2mnbjrlnb3xaa3d2fnwdfxpu