Atmospheric multiple scattering effect on spatial resolution of imaging systems

Details Atmospheric multiple scattering effect on spatial resolution of imaging systems Atmospheric multiple scattering effect on spatial resolution of imaging systems

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997spie.2956..154b&link_type=abstract

Proc. SPIE Vol. 2956, p. 154-164, Optics in Atmospheric Propagation, Adaptive Systems, and Lidar Techniques for Remote Sensing,

Physics

Optics

Scientific paper

In this paper a physical model that describes the relationship between the optical properties of the atmosphere and the characteristics of an imaging system is suggested. The model describes how different components of the light reaching the imaging system, after passing through the atmosphere, are detected by it. The model includes the effects of the final size of the detector elements of the imaging system and the dynamic range and the final field of view limits of the imager. It is found that for common imaging systems (with resolution of 8 bit or 12 bit) working in general atmosphere conditions (VIS >= 5 km), the processes of atmospheric scattering and absorption hardly contribute to spatial blurring of the recorded images. A field experiment was carried out in order to verify the predictions of the suggested model. The measurements were performed using a scanning point radiometer, while a local meteorological station and a visibility meter measured the properties of the atmosphere. Theoretical predictions, which were accomplished by using a Monte-Carlo simulation of atmospheric scattering effects, are compared with the experimental data acquired in the field tests. A good agreement was obtained between the measured data and the theoretical predictions.

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