Contrast-based Phase Calibration for Remote Sensing Systems with Digital Beamforming Antennas
Farquharson, Gordon and Lopez-Dekker, Paco and Frasier, Stephen J. (2013) Contrast-based Phase Calibration for Remote Sensing Systems with Digital Beamforming Antennas. IEEE Transactions on Geoscience and Remote Sensing, PP (99), pp. 1-11. DOI: 10.1109/TGRS.2012.2205695. ISSN 0196-2892.
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A contrast-based phase calibration algorithm for digital-beamforming remote sensing radars using three contrast metrics is presented. The performance of the algorithm is studied using a combination of simulated and real radar data under various conditions, and is compared with a clutter-based calibration algorithm. An analytical proof showing that maximizing the expected value of the 4-norm metric is equivalent to phase calibrating the image, is provided. We find that the clutter calibration algorithm performs best for statistically homogeneous scenes, but that the contrast calibration algorithms perform better with scenes with larger contrast ratios.
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|Title:||Contrast-based Phase Calibration for Remote Sensing Systems with Digital Beamforming Antennas|
|Journal or Publication Title:||IEEE Transactions on Geoscience and Remote Sensing|
|In Open Access:||No|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 1-11|
|Keywords:||Antenna arrays, calibration, digital-beamforming, phase estimation, radar, remote sensing.|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Raumfahrt|
|HGF - Program Themes:||R EO - Erdbeobachtung|
|DLR - Research area:||Raumfahrt|
|DLR - Program:||R EO - Erdbeobachtung|
|DLR - Research theme (Project):||R - Vorhaben SAR-Expert-Support-Lab|
|Institutes and Institutions:||Microwaves and Radar Institute > Radar Concepts|
|Deposited By:||Paco Lopez Dekker|
|Deposited On:||12 Dec 2011 12:15|
|Last Modified:||13 Feb 2013 14:56|
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