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Published in:
2017 | OriginalPaper | Chapter
1. Parameter Estimation for Satellite Gravity Field Modeling
Authors : Jürgen Kusche, Anne Springer
Published in: Global Gravity Field Modeling from Satellite-to-Satellite Tracking Data
Publisher: Springer International Publishing
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Abstract
In simple words, parameter estimation is the process of extracting well-defined best ‘guesses’ of geophysical or measurement-system related values from uncertain and erroneous, conflicting and possibly at the same time incomplete data. These data may provide information on the sought-for parameters by way of direct observation, but much more often this relation is very indirect. Anyway, we know that we can never know ‘true’ parameters but we are satisfied with ‘estimates’ as long as these are ‘best’ in some way, like having the least spread for a given breed of data errors.