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  4. 3(21)'2009
  5. WAYS OF PERFECTION ACOUSTO-OPTIC FILTERS FOR THE VIDEOSPECTROMETERS OF REMOTE SENSING OF EARTH

WAYS OF PERFECTION ACOUSTO-OPTIC FILTERS FOR THE VIDEOSPECTROMETERS OF REMOTE SENSING OF EARTH

O.V. Yefimova, Ye.L. Cherkashina
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In the article possibility of the use of videospectrometers comes into question for research of reflecting properties of soilvegetable cover in behalf of the remote sensing of Earth. It is shown that substantial distinctions it is possible to get in reflecting properties of earthly surface, only promoting selectivity of filters, based on the use of periodic structures of change of index of refraction of environment. Using co-operating of light with an ultrasound under the double Bregg’s angle and spatial constituents of the second order, it is possible to promote in once or twice settling ability of аacousto-optic filters.
Keywords: acousto-optic filter, remote sensing of Earth, selectivity, videospectrometer, Bregg’s angle