Simplified simulation of non-resolved objects in hyperspectral remote sensing for space situational awareness (Conference Presentation)

This paper presents a simple approach to simulate the temporal variations of the spectral signature for a non-resolved object in hyperspectral remote sensing for space situational awareness. The simulation consist of an object with a simple geometry made of multiple materials rotating at a constant angular speed. The non-resolved object produces a time varying spectral signature that is measured by the imaging spectrometer. Signatures from representative materials in space crafts are used in the simulation. The simulation results are used as input to a hyperspectral unmixing approach to evaluate its capacity to extract spacecraft spectral endmember signatures from the spectro-temporal signature. The expectations is that the results from unmixing can be used to characterize, catalogue or identify the space object. Extracted spectral endmember signatures can be used to augment existing spectral libraries.