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Polarimetric Calibration of a Bistatic SAR detector
The polarimetric radars o er the advantage of knowing about properties of target's surface by acquiring information of how the incident electromagnetic energy is scattered respect to orthogonal polarization vectors.
Yam Ontiveros, Luis Eduardo
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Polarimetric system calibration in the presence of Faraday rotation
2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2017 A methodology that allows the separation of Faraday Rotation (FR) distortion from system induced distortion for the calibration of spaceborne polarimetric data is proposed. The separation is based on the frequency dependency of the FR across the system bandwidth and relies on the commonly used assumption that system distortions are frequency ...
Papathanassiou, Konstantinos +1 more
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Fast and accurate polarimetric calibration of infrared imaging polarimetric sensors
Applied Optics, 2021Polarimetric imaging cameras require polarimetric calibration to accurately estimate the incident Stokes vector of incoming radiation. This calibration establishes a relationship between changes in the sensor signal and incident Stokes vector. In the standard procedure, an imager is presented with a set of input Stokes vectors with two different ...
Sławomir Gogler +5 more
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UAVSAR Polarimetric Calibration
IEEE Transactions on Geoscience and Remote Sensing, 2015Uninhabited aerial vehicle synthetic aperture radar (UAVSAR) is a reconfigurable polarimetric L-band SAR that operates in quad-polarization mode and is specifically designed to acquire airborne repeat-track SAR data for interferometric measurements. In this paper, we present details of the UAVSAR radar performance, the radiometric calibration, and the ...
Alexander G. Fore +6 more
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Polarimetric PALSAR Calibration
IEEE Transactions on Geoscience and Remote Sensing, 2009Polarimetric Phased-Array-type L-band Synthetic Aperture Radar (PALSAR) system parameters are assessed using data sets collected over several calibration sites. The data collected over the Amazonian rain forest help validate the hypothesis that Faraday rotation is zero near the equator.
Ridha Touzi, Masanobu Shimada
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Polarimetric calibration of angles
Measurement Science and Technology, 2003This paper describes a method for calibrating the angles of transparent prism-type optical elements. The optical system used is a manual null polarimeter. The angle of incidence, which is a sensitive parameter in polarimetric and ellipsometric measurements, is first calibrated using the same arrangement. The accuracy of the method is ± 0.004°.
N N Nagib, S A Khodier, H M Sidki
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Calibration of bistatic polarimetric radar systems
IEEE Transactions on Geoscience and Remote Sensing, 1992A calibration technique for laboratory type polarimetric, bistatic instrumentation radars is presented. It describes the errors induced by the standard radiation transfer approach (I-SRT) in a way similar to that for the monostatic case. A 12-term error correction and absolute polarimetric calibration is performed with two external reference targets ...
Kaehny, Daniel +2 more
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Study of calibration of windsat polarimetric sensor
Proceedings. 2005 IEEE International Geoscience and Remote Sensing Symposium, 2005. IGARSS '05., 2005Abstract : A new methodology is developed to monitor and calibrate the Windsat 3rd and 4th Stokes parameters through tropical rainforest measurements over Amazon and the central Africa. It is found that the Windsat 4th Stokes parameter at 18 GHz has biases on an order of 0.5 Kelvin, which could severely impact the wind vector retrievals.
Quanhua (Mark) Liu, Fuzhong Weng
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Comparison of polarimetric calibration techniques and their applications
2010 IEEE International Geoscience and Remote Sensing Symposium, 2010Crosstalk calibration is an important part of polarimetric calibration, and the Quegan algorithm and Ainsworth algorithm are classic algorithms to reduce crosstalk. This paper gives analysis and comparison of these algorithms for quad polarized data with low crosstalk and high crosstalk, respectively. The PolSAR data used in experiments are acquired by
Wuping Lu +4 more
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Analysis and improvement of polarimetric calibration techniques
2007 IEEE International Geoscience and Remote Sensing Symposium, 2007This work presents an analytical study of the Quegan's PolSAR data calibration algorithm. As it shall be demonstrated, the solution proposed by Quegan based on certain approximations, gives in certain situations, biased crosstalk ratios u, v, w and z. An improved Quegan's calibration algorithm is proposed and tested.
Carlos López-Martínez +2 more
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