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- W2378672776 abstract "The measurement of the Modulation Transfer Function(MTF)to quantify the quality of an imaging system provesto be very important in the context of Earth observation satellites. Its knowledge also allows to compare the characteristics of different satellites. Classical in flight MTF measurement methods is based upon devoted well known targets. These techniques induce heavy consrtaints upon satellite payload programming taking into account nebulosity conditions and aliasing effects. The least square method introduced to assess the MTF of the satellite camera, which consists in taking two images of the same scene, one in a high resolution mode and the other one in a lower resolution mode. When the resolution ratio is high enough, it is possible to simulate the lower resoltion image through convolution with point spread function(PSF) and undersampling. This method consists in an iterative process, according to which the PSF evolves in order to minimize a least square criterion measuring the difference between the simulation and the low resolution image. Once the process has converged, taking the Fourier Transform of the PSF gives the estination of the low resolution image MTF." @default.
- W2378672776 created "2016-06-24" @default.
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- W2378672776 date "2006-01-01" @default.
- W2378672776 modified "2023-09-24" @default.
- W2378672776 title "MTF Assessment of the Satellite camera Based on the Least Square Mehtod" @default.
- W2378672776 hasPublicationYear "2006" @default.
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