Instrumentation for high-precision in-flight focusing of on-board optoelectronic equipment is described. The first part of the paper gives an overview of the existing focusing techniques and describes their application for particular remote sensing task solutions. A comparison of different methods is made, the accuracy provided by each method is assessed and one of the best techniques-a contrast method-is considered. This method is shown to provide high precision-5 mu m or better. The second part describes a mathematical model of instrumentation using this method. It includes a diffraction modulation transfer function (MTF), an MTF related to optical system aberrations and an optical system defocusing MTF. The simulation results are shown and respective recommendations are given.
Instrumentation for obtaining best-image surface in remote-sensing optoelectronic systems
1999
6 Seiten, 8 Quellen
Conference paper
English
Instrumentation for obtaining best-image surface in remote-sensing optoelectronic systems [3901-19]
British Library Conference Proceedings | 1999
|Instrumentation for remote sensing from space
NTRS | 1986
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