Abstract
It is proposed to consider artificial-satellite global observation systems providing remote probing of the Earth from space as space-based information measurement systems performing indirect measurements of some particular property of the observed object, utilizing mathematical modeling and information-processing algorithms. The models and algorithms are integral parts of space-based information measurement systems and to a considerable extent determine the accuracy and confidence in the results obtained. After it has processed the data, the system records an estimate of the parameters of the observed object and the covariance matrix of the estimation errors. The present article analyzes the metrological aspects of the operation of space-based information measurement systems as applied to the particular but practically important problem of locating sources of electromagnetic radiation.
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