19 August 1998 Spatial-based feature extraction for estimating radial wind speed in Doppler radar spectra
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Abstract
The power density spectra of wind profile are usually contaminated by persistent ground clutter. The radial wind speed estimated in such spectral data can produce a considerable error if each spectrum is processed independently. For the clutter-elimination purpose, we propose an algorithm for estimating radial wind speed that takes into account a spatial relationship within range-gated spectra. The candidates for the atmospheric echo in each spectrum are firstly determined by detecting all local power density maxima in the smoothed and normalized spectra. The spatial relationship is then exploited by linking those local maxima across gates, with respect to a continuity criterion. A number of features can be extracted from each candidate and a neural network is subsequently used to identify the local maximum most likely reflecting the radial atmospheric velocity.
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Punya Thitimajshima, Punya Thitimajshima, Yuttapong Rangsanseri, Yuttapong Rangsanseri, } "Spatial-based feature extraction for estimating radial wind speed in Doppler radar spectra", Proc. SPIE 3503, Microwave Remote Sensing of the Atmosphere and Environment, (19 August 1998); doi: 10.1117/12.319498; https://doi.org/10.1117/12.319498
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