Measurement of Transmitted Differential Phase on Polarimetric Radars

A measurement procedure to determine transmitted differential phase between horizontally and vertically polarized radiation of a dual-polarization radar is presented. It is applicable to radars that transmit and receive Simultaneously Horizontally and Vertically (SHV) polarized waves. The method rel...

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Bibliographic Details
Published in:IEEE geoscience and remote sensing letters 2024-01, Vol.21, p.1-1
Main Authors: Schvartzman, David, Zrnic, Dusan, Cheong, Boonleng, Segales, Antonio R., Schneebeli, Marc
Format: Article
Language:English
Subjects:
Antenna measurements
differential phase
Dual polarization radar
dual-polarization
field measurement
Meteorological radar
Phase measurement
Polarimetry
Polarization
Polarized radiation
Power measurement
Radar
Radar antennas
Radar measurements
Radar polarimetry
Software radio
Superhigh frequencies
Transmitters
Vertical polarization
weather radar
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Summary:A measurement procedure to determine transmitted differential phase between horizontally and vertically polarized radiation of a dual-polarization radar is presented. It is applicable to radars that transmit and receive Simultaneously Horizontally and Vertically (SHV) polarized waves. The method relies only on power measurements and leverages capabilities of polarimetric radars with independent transmitters per polarization to estimate differential phase on transmission. Measurements using this method by ground and airborne systems are conducted, and results are validated using a software-defined radio that provides true phase measurements. The differential phase estimate produced with the proposed method for the PX-1000 (X-band) radar is -105°, while that produced with the software-defined radio is -104.47° ±4.43°. The proposed method with a simple power sensor achieves a precision of ±2.5°.
ISSN:1545-598X
1558-0571
DOI:10.1109/LGRS.2024.3371387