Reconstruction of the spatial distribution of radar reflectivity of precipitation through linear-inversion techniques

Author

Galati, G. ; Naldi, M. ; Ferri, M.

Author_Institution

Dept. of Comput. Sci., Syst. & Ind. Eng., Tor Vergata Univ., Rome, Italy

Volume

143

Issue

6

fYear

1996

fDate

12/1/1996 12:00:00 AM

Firstpage

375

Lastpage

382

Abstract

The authors present a method aiming to remove the smoothing effect due to the antenna beamwidth in the reconstruction of the rain reflectivity based on radar measurements. The function to be reconstructed is the spatial distribution Z(x,y,h) of the radar reflectivity Z of the precipitation, which is shown to be related by a Fredholm integral equation to the power received by the radar. This integral equation is transformed into a set of linear equations and subsequently solved through a constrained-linear-inversion technique. The method is then applied to the cases of both stratiform and convective rain, leading to an improved estimation of the reflectivity-peak location and intensity, and of the overall reflectivity profile

Keywords

Fredholm integral equations; electromagnetic wave reflection; inverse problems; radar applications; radar theory; rain; signal reconstruction; statistical analysis; tropospheric electromagnetic wave propagation; Fredholm integral equation; antenna beamwidth; constrained-linear-inversion technique; convective rain; linear equations; linear-inversion technique; precipitation; radar measurements; radar reflectivity; rain reflectivity; received power; reflectivity-peak intensity; reflectivity-peak location; smoothing effect; spatial distribution; spatial distribution reconstruction; stratiform rain;

fLanguage

English

Journal_Title

Radar, Sonar and Navigation, IEE Proceedings -

Publisher

iet

ISSN

1350-2395

Type

jour

DOI

10.1049/ip-rsn:19960722

Filename

561148