Results 41 to 50 of about 16,272 (256)

Optimised limit for polarimetric calibration of fully polarised SAR systems

Electronics Letters, 2016
The optimised limit for polarimetric calibration of fully polarised synthetic aperture radar systems is derived by establishing an error model as a function of cross‐talk, channel imbalance and system noise. Compared with noise equivalent sigma zero, the
Jie Chen, Wei Guo, Zhuo Li, Wei Liu
doaj   +1 more source

A Three-Hierarchy Evaluation of Polarimetric Performance of GF-3, Compared with ALOS-2/PALSAR-2 and RADARSAT-2

Sensors, 2019
GaoFen-3 (GF-3) is the first Chinese civilian multi-polarization synthetic aperture radar (SAR) satellite, launched on 10 August of 2016, and put into operation at the end of January 2017.
Zezhong Wang, Jian Jiao, Qiming Zeng, Junyi Liu   +3 more
doaj   +1 more source

Polarimetric SAR cross-calibration method based on stable distributed targets

Geo-spatial Information Science
Polarimetric calibration is essential for the pre-processing of Polarimetric Synthetic Aperture Radar (PolSAR) data because it effectively mitigates polarimetric distortions in the measured PolSAR data.
Yongsheng Zhou, Peiyun Chen, Qiang Yin, Erxue Chen, Laurent Ferro-Famil, Fan Zhang   +5 more
doaj   +1 more source

Polarimetric Calibration for a Ground-Based Radar, and Comparison of the Polarimetric Parameters with Air-Borne SAR Obtained from a Forest

Remote Sensing, 2017
A polarimetric ground-based radar (GB-radar) system operated in the L-band has been developed. The frequency range of GB-radar is 1.215 to 1.3 GHz, which is the same as that of Japanese satellite-borne SAR, PALSAR-2 (Phased Array type L-band Synthetic ...
Manabu Watanabe, Masanobu Shimada
doaj   +1 more source

High Accuracy Near-infrared Imaging Polarimetry with NICMOS

, 2008
The findings of a nine orbit calibration plan carried out during HST Cycle 15, to fully determine the NICMOS camera 2 (2.0 micron) polarization calibration to high accuracy, are reported. Recently Ueta et al. and Batcheldor et al.
Axon, D. J., Batcheldor, D., Hines, D. C., Robinson, A., Schmidt, G. D., Schneider, G., Sparks, W., Tadhunter, C.   +7 more
core   +1 more source

Detailed optical and near-infrared polarimetry, spectroscopy and broadband photometry of the afterglow of GRB 091018: Polarisation evolution [PDF]

, 2012
[Abridged] A number of phenomena have been observed in GRB afterglows that defy explanation by simple versions of the standard fireball model, leading to a variety of new models.
A. de Ugarte Postigo, A. Gomboc, A. J. Levan, A. J. van der Horst, A. Melandri, A. Rossi, A. Rowlinson, Alard, Barth, Berger, Bersier, Bersier, Björnsson, Bloom, Bloom, Burenin, C. G. Mundell, C. Guidorzi, C. Kouveliotou, Cardelli, Chandrasekhar, Costa, Covino, Curran, Curran, Cushing, E. Palazzi, E. Rol, Evans, Fossati, Fox, Frail, Gehrels, Gehrels, Ghisellini, Goldoni, Gorosabel, Granot, Granot, Greiner, Greiner, Greiner, Gruzinov, Gruzinov, Holland, I. A. Steele, J. Gorosabel, J. Greiner, J. Hjorth, J. P. U. Fynbo, Joos, K. Wiersema, Kennicutt, Klose, Kocevski, Kouveliotou, Krühler, Krühler, L. Kaper, Lazzati, Lazzati, Lazzati, Lipkin, Martin, Martin, Masetti, Matheson, Matsumiya, Mirabal, Mundell, Mészáros, Mészáros, N. R. Tanvir, Nousek, P. A. Curran, P. A. Evans, P. Goldoni, P. T. O'Brien, Pandey, Patat, Piran, R. A. M. J. Wijers, R. Filgas, R. L. C. Starling, Racusin, Rhoads, Rhoads, Rol, Roming, Rossi, S. Covino, S. D. Vergani, S. Klose, S. Kobayashi, Sagiv, Sari, Sari, Sato, Savaglio, Schady, Serkowski, Serkowski, Simmons, Sparks, Steele, T. Krühler, Toma, Uemura, Ukwatta, V. D'Elia, Van der Horst, van Paradijs, Vlasis, Vreeswijk, Wardle, Wiersema, Wijers, Willingale, Witzel, Wu   +119 more
core   +6 more sources

External polarimetric calibration of the Danish polarimetric C-band SAR [PDF]

Proceedings of IGARSS '94 - 1994 IEEE International Geoscience and Remote Sensing Symposium, 2005
Results of applying two cross-talk removal algorithms (Klein's and Quegan's methods) based on natural distributed targets to the Danish polarimetric airborne SAR (EMISAR) are presented. Also, a new approach of obtaining robust estimates by the algorithms is proposed.
H. Skriver, J. Dall, S. Norvang Madsen
openaire   +1 more source

C-SAR/02 Satellite Polarimetric Calibration and Validation Based on Active Radar Calibrators

Remote Sensing
Quad-polarization synthetic aperture radar (SAR) satellites are important detection tools in Earth observation and remote sensing; in particular, they are of great significance for accurately interpreting radar data and inverting geophysical parameters ...
Yanan Jiao, Fengli Zhang, Xiaochen Liu, Zhiwei Huang, Jingwen Yuan   +4 more
doaj   +1 more source

General Five-Component Scattering Power Decomposition with Unitary Transformation (G5U) of Coherency Matrix

Remote Sensing, 2023
The polarimetric synthetic aperture radar (PolSAR) provides us with a two-by-two scattering matrix data set. The ensemble averaged coherency matrix in an imaging window derived using a scattering matrix has all non-zero elements in its three-by-three ...
Rashmi Malik, Gulab Singh, Onkar Dikshit, Yoshio Yamaguchi   +3 more
doaj   +1 more source

Polarimetric Distortion Analysis of L- and S-Band Airborne SAR (LS-ASAR): A Precursor Study of the Spaceborne Dual-Frequency L- and S-Band NASA ISRO Synthetic Aperture Radar (NISAR) Mission

Engineering Proceedings, 2022
The polarimetric calibration (PolCal) is an essential process to ensure the minimization of distortions from airborne and spaceborne SAR data for scattering-based characterization of the targeted objects.
Shashi Kumar
doaj   +1 more source