Analysis of cross-beam resolution effects in rainfall rate profile retrieval from a spaceborne radar

Author

Amayenc, P. ; Marzoug, Mongi ; Testud, Jacques

Author_Institution

CNET-CNRS, Centre de Recherches en Phys. de l´´Environnement, Issy les Moulineaux, France

Volume

31

Issue

2

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

417

Lastpage

425

Abstract

The performance (stability and accuracy) of a range profiling algorithm (kZS), using the measurement of surface echo as a constraint on total path integrated attenuation, for rainfall retrieval from a spaceborne radar was presented and discussed by C. Matzler (1987). Omitting other causes of errors previously examined, the present authors focus specifically on possible bias due to nonuniform beam filling effects. This problem is studied analytically to identify the physical origin of the biasing terms. In addition, bias in rainfall profile estimates is quantified through simulations of Ku-band spaceborne radar data processing, featuring the intercept of a raincell model by the downward looking radar beam

Keywords

atmospheric techniques; radar theory; rain; remote sensing by radar; Ku-band; bias; cross-beam resolution effects; data processing; downward looking radar beam; nonuniform beam filling; performance; raincell model; rainfall rate profile retrieval; range profiling algorithm; remote sensing; spaceborne radar; surface echo; total path integrated attenuation; Algorithm design and analysis; Attenuation; Filling; Frequency; Integrated circuit modeling; Radar antennas; Radar measurements; Rain; Reflectivity; Spaceborne radar;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.214918

Filename

214918