How many parameters can be maximally estimated from a set of measurements?
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Remote sensing algorithms often invert multiple measurements simultaneously to retrieve a group of geophysical parameters. In order to create a robust retrieval algorithm, it is necessary to ensure that there are more unique measurements than parameters to be retrieved. If this is not the case, the inversion might have multiple solutions and be sensitive to noise. In this letter, we introduce a methodology to calculate the number of (possibly fractional)
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CitacióKonings, A., McColl, K., Piles, M., Entekhabi, D. How many parameters can be maximally estimated from a set of measurements?. "IEEE Geoscience and Remote Sensing Letters", 01 Maig 2015, vol. 12, núm. 5, p. 1081-1085.
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