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Searchlight: Precipitation advection tracking using multiplatform low-earth-orbiting satellite data

Bellerby, Timothy



This paper presents a new algorithm, Searchlight, capable of tracking precipitation advection through the complex spatiotemporal sampling pattern of multiplatform low-Earth-orbiting (LEO) passive and active microwave satellite data sets. The algorithm is based on the concept of "shining" a searchlight forward in time along proposed advection velocity vectors from a given LEO overpass. The searchlight "beam" links precipitation patterns in the current satellite overpass to corresponding patterns in multiple future overpasses. A global optimization determines an advection model by maximizing mutual information between linked precipitation measurements. The algorithm has been validated against surface radar over a region covering the Central and Eastern U.S.


Bellerby, T. (2013). Searchlight: Precipitation advection tracking using multiplatform low-earth-orbiting satellite data. IEEE transactions on geoscience and remote sensing : a publication of the IEEE Geoscience and Remote Sensing Society, 51(4), 2177-2187.

Journal Article Type Article
Online Publication Date Sep 17, 2012
Publication Date 2013-04
Deposit Date Nov 13, 2014
Journal Ieee Transactions On Geoscience And Remote Sensing
Print ISSN 0196-2892
Electronic ISSN 1558-0644
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 51
Issue 4
Pages 2177-2187
Keywords Vectors; Pattern matching; Storms; Low earth orbit satellites; Microwave measurements; Radar tracking; Feature tracking; Mutual information; Precipitation advection; Satellite precipitation
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