Title :
Performance enhancement of a spline-based method for extreme compression of weather radar reflectivity data
Author :
Mahapatra, Pravas R. ; Makkapati, Vishnu V.
Author_Institution :
Dept. of Aerosp. Eng., Indian Inst. of Sci., Bangalore
Abstract :
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
Keywords :
Doppler radar; data compression; interpolation; mean square error methods; meteorological radar; reflectivity; splines (mathematics); B-spline interpolation; Doppler weather radar data sets; contour reconstruction; data compression; root-mean-square error; weather radar reflectivity data; Aircraft; Bandwidth; Data compression; Data processing; Displays; Doppler radar; Hazards; Meteorological radar; Reflectivity; Spline;
Conference_Titel :
Signal Processing and Information Technology, 2005. Proceedings of the Fifth IEEE International Symposium on
Conference_Location :
Athens
Print_ISBN :
0-7803-9313-9
DOI :
10.1109/ISSPIT.2005.1577086