Wavelength band selection algorithm based on background radiance subtraction and its application to target detection

An orthogonal subspace projection approach is introduced. Using the method, the background radiance can be eliminated from the received mixture signal. Using the matching pursuit algorithm, optimum wavelength bands can be picked out. The aim to detect target can be achieved by choosing the bands. Applying this method to target detection out of the atmosphere, the result has been obtained. It can be approved the method is effective to choose optimum wavelength bands for target detection.