Results 1 to 10 of about 512,786 (105)

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

IEEE Transactions on Geoscience and Remote Sensing, 2018
Differential interferometry using ground-based radar systems permits to monitor displacements in natural terrain with high flexibility in location, time of acquisition, and revisit time. In combination with polarimetric imaging, discrimination of different scattering mechanisms present in a resolution cell can be obtained simultaneously with the ...
Simone Baffelli, Othmar Frey, Charles Werner 0001, Irena Hajnsek   +3 more
openaire   +6 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

Polarimetric calibration of PALSAR2

2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015
On May 24, 2014, ALOS2 was launched. ALOS2 is the follow-on satellite of ALOS and has the L-band Synthetic Aperture Radar (PALSAR2). PALSAR2 provides an image with the higher resolution(3m) and wider swath(50km) in high resolution mode as compared with the image of former L-band SAR (PALSAR).
Ridha Touzi, Masanobu Shimada
  +7 more sources

Calibration of a polarimetric imaging SAR [PDF]

IEEE Transactions on Geoscience and Remote Sensing, 1992
Calibration using point targets is discussed. The fourport network calibration technique is used to describe the radar error model. The processor ambiguity function and the radar distortion matrices are combined to form a generalized polarimetric ambiguity function.
Kamal Sarabandi, Leland E. Pierce, Fawwaz T. Ulaby   +2 more
openaire   +2 more sources

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   +2 more sources

Calibration of radars using polarimetric techniques [PDF]

IEEE Transactions on Geoscience and Remote Sensing, 1992
A method that uses the properties of rain medium itself to obtain accurate weather radar system gain calibration is discussed. This technique is based on the principle that the rainfall rate measured using absolute reflectivity (Z) and differential reflectivity (Z/sub DR/) is the same as that obtained from specific differential phase (K/sub DP/).
Eugenio Gorgucci, Gianfranco Scarchilli, V. Chandrasekar 0001   +2 more
openaire   +2 more sources

Polarization Holographic 4D Phenotyping Reveals Nanoplastic Induced Dysfunction in Zooplankton

Advanced Science, EarlyView.
Contaminant‐induced dysfunction in complex aquatic organisms remains difficult to resolve across scales. Polarization Holographic Imaging Microscopy (PHIM) integrates polarization‐sensitive holography with computational volumetric reconstruction for label‐free phenotyping of zooplankton in natural seawater, revealing that nanoplastic stress drives ...
Yuxing Li, Yanmin Zhu, Jingyan Chen, Rongzhou Chen, Yuen‐Wa Ho, Chutian Wang, James Kar‐Hei Fang, Kevin K. Tsia, Edmund Y. Lam   +8 more
wiley   +1 more source

Metasurface‐Based Multidimensional Light‐Field Manipulation: From Technologies to Applications

Advanced Science, EarlyView.
Multidimensional metasurfaces enable versatile manipulation of multiple optical degrees of freedom, including phase, amplitude, polarization, wavelength, and orbital angular momentum. This review summarizes their fundamental mechanisms, emerging strategies for multidimensional light‐field control, and key applications in optical computing, imaging ...
Heliang Yin, Shuo Sun, Jiahao Zhang, Jianuo Hu, Yubin Qiao, Liang Chen, Jin Li   +6 more
wiley   +1 more source

Skyless polarimetric calibration and visibility enhancement

Optics Express, 2009
Outdoor imaging in haze is plagued by poor visibility. A major problem is spatially-varying reduction of contrast by airlight, which is scattered by the haze particles towards the camera. However, images can be compensated for haze, and even yield a depth map of the scene. A key step in such scene recovery is subtraction of the airlight. In particular,
Einav, Namer, Sarit, Shwartz, Yoav Y, Schechner   +2 more
openaire   +2 more sources

Broadband Near‐Field Computational Microwave Imaging Enabled by Nonperiodic Dispersive Unit‐Cell Loading in a Passive Metasurface

Advanced Electronic Materials, EarlyView.
A compact passive engineered surface converts changes in microwave frequency into many distinct illumination patterns, allowing nearby objects to be imaged without mechanical scanning, active tuning, or a large antenna array. Operating from 18 to 28 GHz, the single‐port system uses measured field patterns to reconstruct metallic targets and distinguish
Mohammed H. Arif, Firas Slewa Dawod, Henrik Jansen, Caner Kadıoğlu, Sayan Roy, Dirk Heberling, Renato Negra   +6 more
wiley   +1 more source