Information Approach to Channel Selection for Stellar Occultation Measurements
In this paper we examine methods for the selection of spectral channels using information theory. These methods take the information content of the measurements as a criterion. The optimal selection of spectral channels becomes especially important with the recent introduction of high spectral resolution satellite instruments for monitoring the atmosphere. The problem of optimal selection of spectral channels cannot be solved exactly, because of the astronomical number of different channel combinations. An effective procedure for searching for the optimal data subset is therefore needed. This paper develops the approach to the channel selection proposed in . We show an application of a sequential selection, a sequential deselecting procedure and a fast algorithm for channels selection to determination of the most informative channels for the COALA instrument.
KeywordsEntropy Covariance Ozone Refraction
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