Doppler velocity calibration study for Cloud Profiling Radar on earthcare

Author

Horie, Hiroaki ; Ohno, Yuichi ; Sato, Kenji ; Nakagawa, Katsuhiro ; Takahashi, Nobuhiro

Author_Institution

Nat. Inst. of Inf. & Commun. Technol. (NICT), Koganei, Japan

fYear

2012

fDate

22-27 July 2012

Firstpage

4629

Lastpage

4632

Abstract

The Cloud Profiling Radar (CPR) on EarthCARE satellite is the first spaceborne Doppler radar for cloud and precipitation. In order to calibrate Doppler velocity, the external calibration study using active radar calibrator (ARC) is needed. The ARC must have the function to measure amplitude and phase of signal for the calibration. In addition, measurement of antenna beam angle is needed because satellite velocity is contaminated to radial velocity of radar measurement. Then the feasibility experiment was performed using the transmitting signal from CPR of CloudSat. In this paper, the preliminary result is reported and the calibration performance is discussed.

Keywords

Doppler radar; angular measurement; atmospheric measuring apparatus; atmospheric precipitation; calibration; clouds; geophysical signal processing; spaceborne radar; Cloud Profiling Radar; CloudSat; Doppler velocity calibration; EarthCARE satellite; active radar calibrator; antenna beam angle measurement; calibration performance; external calibration; feasibility experiment; radar measurement; radial velocity; satellite velocity; signal phase; spaceborne Doppler radar; Antenna measurements; Calibration; Clouds; Doppler effect; Satellites; Spaceborne radar; Doppler radar; Spaceborne radar; calibration; millimeter wave radar;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International

Conference_Location

Munich

ISSN

2153-6996

Print_ISBN

978-1-4673-1160-1

Electronic_ISBN

2153-6996

Type

conf

DOI

10.1109/IGARSS.2012.6350434

Filename

6350434