Adaptive spatial-spectral processing (ASSP)

A hyperspectral imaging sensor and an adaptive spatial spectral processing filter capable of detecting, identifying, and/or classifying targets having a spatial extent of one pixel or less includes a sensor that may be oversampled such that a pixel is spatially smaller than the optical blur or point spread function of the sensor. Adaptive spatial spectral processing may be performed on hyperspectral image data to detect targets having spectral features that are known a priori, and/or that are anomalous compared to nearby pixels. Further, the adaptive spatial spectral processing may recover target energy spread over multiple pixels and reduce background clutter to increase the signal-to-noise ratio.