The Study On The Modulation Transfer Function Of Heperspectral Imager Imaging-Link

Image-quality evaluation of imaging-link in optical system is an important subject in field of optical detection. In this paper spectral imager imaging-link is mainly partitioned four self-imaging sub-systems including telescope system ,slit system, spectral imager,and square array CCD. By means of analyzing construction of the subsystems, the primary causation of the modulation transfer function is obtained.The modulation transfer function of both slits( a slit and linear array slits) was simulated. The conclusion that in condition of equal size, the modulation transfer function of a slit is prior to that of a slit and linear array slits was drawn.simulating the modulation transfer function of both slits charactered errors against CCD was completed. being dead against coupling deviations beyond retrieve, a compensable measure of re-interpolation was given.In the examination based on Abel imaging theory and optical Fourier analysis principle, square grating frequency spectrums was filtered in spatial, the intensity test patterns of sine light intensity came into being. For convenience to choice of frequency spectrums ,"V"—shape spatial filters was especially devised. With integration to contrast method, three- position measurement aimed at the modulation transfer function of hyperspectral imager imaging-link was devolped. Making use of...