Abstract
Filtering of a large portion of Geos 3 satellite radar altimetry data at the Naval Surface Weapons Center has been accomplished by a Wiener smoother. The statistics of the geoid for the Wiener smoother is based on a third‐order Markov process. Because of some limitations the Wiener smoother has been replaced by a Kalman smoother which satisfies more closely the conditions of the altimetry data. The Kalman smoother also uses the same third‐order Markov statistics. A discussion of the smoothers (filter models), results obtained from the models, and a comparison of results with ship survey data are given in this paper.
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