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Performance enhancement of a spline-based method for extreme compression of weather radar reflectivity data

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2 Author(s)
Mahapatra, Pravas R. ; Dept. of Aerosp. Eng., Indian Inst. of Sci., Bangalore ; Makkapati, V.V.

Enhancements are carried out to a contour-based method for extreme compression of weather radar reflectivity data for efficient storage and transmission over low-bandwidth data links. In particular, a new method of systematically adjusting the control points to obtain better reconstruction of the contours using B-spline interpolation is presented. Further, bit-level manipulations to achieve higher compression ratios are investigated. The efficacy of these enhancements is quantitatively evaluated with respect to achievable compression ratios and the root-mean-square error of the retrieved contours, and qualitatively assessed from the visual fidelity of the reconstructed contours. Results are presented for actual Doppler weather radar data sets

Published in:

Signal Processing and Information Technology, 2005. Proceedings of the Fifth IEEE International Symposium on

Date of Conference:

21-21 Dec. 2005