Results 11 to 20 of about 16,272 (256)

The NICMOS Polarimetric Calibration [PDF]

Publications of the Astronomical Society of the Pacific, 2006
The value of accurately knowing the absolute calibration of the polarizing elements in the Near Infrared Camera and Multi-Object Spectrometer (NICMOS) becomes especially important when conducting studies which require measuring degrees of polarization of close to 1% in the near infrared.
Batcheldor, D., Robinson, A., Axon, D., Hines, D. C., Sparks, W., Tadhunter, C.   +5 more
openaire   +3 more sources

Calibration and Validation of Polarimetric ALOS2-PALSAR2

Remote Sensing, 2022
PALSAR2 polarimetric distortion matrix is measured using corner reflectors deployed in the Amazonian forest. The Amazonian forest near the geomagnetic equator provides ideal sites for the assessment of L-band PALSAR2 antenna parameters, at free Faraday ...
Ridha Touzi, Masanobu Shimada, Takeshi Motohka   +2 more
doaj   +2 more sources

Performance of SAR Polarimetric Calibration Using Hybrid Corner Reflectors: Numerical Simulations and Experimental Measurements

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
In this article, we devise a polarimetric calibration method utilizing only three types of calibration targets, i.e., trihedral, dihedral, and a 22.5°-rotated dihedral corner reflectors and requiring no assumptions on the scene statistics.
Suyun Wang, Kun-Shan Chen, Motoyuki Sato
doaj   +2 more sources

Polarimetric SAR Calibration and Processing Tool V1.0: A Tool for Polarimetric Calibration and Processing of SAR Data [PDF]

2020 7th International Conference on Signal Processing and Integrated Networks (SPIN), 2020
Polarimetric SAR (PolSAR) has been widely used as an active imaging remote sensing technique to characterize manmade and natural features. The PolSAR data needs to be corrected from the polarimetric distortions to minimize the ambiguities for the accurate information retrieval of scatterers.
Kumar, Shashi, Kumari, Varsha, Alice, Alice, Bhanu Prakash, M. E., Babu, Arun, Maiti, A., Agrawal, Shefali   +6 more
openaire   +3 more sources

Calibration of SAR Polarimetric Images by Covariance Matching Estimation Technique with Initial Search [PDF]

Remote Sensing
To date, various methods have been proposed for calibrating polarimetric synthetic aperture radar (SAR) using distributed targets. Some studies have utilized the covariance matching estimation technique (Comet) for SAR data calibration.
Jingke Liu, Lin Liu, Xiaojie Zhou
doaj   +2 more sources

A handheld polarimetric imaging device and calibration technique for accurate mapping of terahertz Stokes vectors [PDF]

Scientific Reports
In recent years, handheld and portable terahertz instruments have been in rapid development for various applications ranging from non-destructive testing to biomedical imaging and sensing.
Zachery B. Harris, Kuangyi Xu, M. Hassan Arbab   +2 more
doaj   +2 more sources

Polarimetric calibration of SAR images using reflection symmetric targets with low helix scattering

International Journal of Applied Earth Observations and Geoinformation, 2021
Polarimetric synthetic aperture radar is an important technology for Earth observation. Generally, polarimetric calibration (PolCAL) should be performed before any quantitative applications.
Yonglei Chang, Lingli Zhao, Lei Shi, Yunju Nie, Zhenyang Hui, Qiulin Xiong, Pingxiang Li   +6 more
doaj   +1 more source

A Reflection Symmetric Target Extraction Method Based on Hypothesis Testing for PolSAR Calibration

Remote Sensing, 2023
Polarimetric calibration is indispensable to quantitatively apply and analyze the polarimetric synthetic aperture radar (PolSAR) image. At present, the polarimetric calibration methods relying on the assumption of reflection symmetry have been widely ...
Bowen Chi, Jixian Zhang, Lijun Lu, Shucheng Yang, Guoman Huang, Xu Gao   +5 more
doaj   +1 more source

Polarimetric Calibration of the Ku-Band Advanced Polarimetric Radar Interferometer [PDF]

IEEE Transactions on Geoscience and Remote Sensing, 2018
ISSN:0196 ...
Simone Baffelli, Othmar Frey, Charles Werner, Irena Hajnsek   +3 more
openaire   +3 more sources

Polarimetric Calibration Scheme Combining Internal and External Calibrations, and Experiment for Gaofen-3

IEEE Access, 2020
The parameters for polarization distortion of spaceborne polarimetric synthetic aperture radar (SAR) have range-dependence (or look-angle-dependence), which requires a polarimetric calibration to be performed at any look-angle.
Weibin Liang, Zengzeng Jia, Jun Hong, Qingjun Zhang, Aichun Wang, Zhaoguo Deng   +5 more
doaj   +1 more source