Extreme Compression of Weather Radar Data

Makkapati, Vishnu V and Mahapatra, Pravas R (2007) Extreme Compression of Weather Radar Data. In: IEEE Transactions on Geoscience and Remote Sensing, 45 (11). pp. 3773-3783.

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Abstract

A method for achieving extreme levels of compression of high-volume weather radar data is presented. Weather reflectivity contours, as per National Weather Service or custom thresholds, are processed by tracing their departure from a smoothed version to obtain the local extrema which serve as control points. The control points, which are transmitted in relative coordinates for further compression, are interpolated using a second-degree B- spline to retrieve the contours. The encoding–decoding method is capable of capturing the random undulations inherent in weather contours. It is shown that over two orders of magnitude of compression is possible without perceptible loss of meteorological information. Multiple enhancements to the basic method are quantitatively studied and compared with the existing methods for radar data compression.

Item Type:	Journal Article
Publication:	IEEE Transactions on Geoscience and Remote Sensing
Publisher:	IEEE
Additional Information:	Copyright 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords:	Contour-based data compression;Extreme data compression;Meteorological radar;Weather radar data compression
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	31 Oct 2007
Last Modified:	19 Sep 2010 04:41
URI:	http://eprints.iisc.ac.in/id/eprint/12405

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