Title :
A Fieldwise Retrieval Approach to the Noise Versus Resolution Tradeoff in Wind Scatterometry
Author :
Williams, Brent A.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
This paper approaches the noise versus resolution tradeoff in wind scatterometry from a fieldwise retrieval perspective. Theoretical considerations are discussed, and a practical implementation is developed and applied to the SeaWinds scatterometer. The approach is compared with conventional approaches, as well as numerical weather predictions and buoys. The new method incorporates knowledge of the wind spectrum to reduce the impact of components of the wind signal that are expected to be noisy while enabling reconstruction of fine-scale features that are distinguishable from noise.
Keywords :
atmospheric techniques; remote sensing by radar; weather forecasting; wind; SeaWinds scatterometer; fieldwise retrieval approach; fieldwise retrieval perspective; numerical weather predictions; wind scatterometry; wind signal components; wind spectrum; Estimation; Noise; Noise measurement; Radar measurements; Spaceborne radar; Vectors; Wind; Bayes estimation; maximum a posteriori estimation; wind scatterometry;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
DOI :
10.1109/TGRS.2012.2233481