NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Calibration of polarimetric radar systems with good polarization isolationA practical technique is proposed for calibrating single-antenna polarimetric radar systems using a metal sphere plus any second target with a strong cross-polarized radar cross section. This technique assumes perfect isolation between antenna ports. It is shown that all magnitudes and phases (relative to one of the like-polarized linear polarization configurations) of the radar transfer function can be calibrated without knowledge of the scattering matrix of the second target. Comparison of the values measured (using this calibration technique) for a tilted cylinder at X-band with theoretical values shows agreement within + or - 0.3 dB in magnitude and + or - 5 degrees in phase. The radar overall cross-polarization isolation was 25 dB. The technique is particularly useful for calibrating a radar under field conditions, because it does not require the careful alignment of calibration targets.
Document ID
19900039591
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Sarabandi, Kamal
(Michigan Univ. Ann Arbor, MI, United States)
Ulaby, Fawwaz T.
(Michigan, University Ann Arbor, United States)
Tassoudji, M. Ali
(MIT Cambridge, MA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Publication Information
Publication: IEEE Transactions on Geoscience and Remote Sensing
Volume: 28
ISSN: 0196-2892
Subject Category
Communications And Radar
Accession Number
90A26646
Funding Number(s)
CONTRACT_GRANT: JPL-957191
CONTRACT_GRANT: NAGW-733
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available