Results 101 to 110 of about 489,746 (209)

Detecting Weak Targets in a Speckled Distributed Scene by SAR Reconfiguration [PDF]

, 2009
In this paper a discussion on the difference between point-like targets and distributed scene in SAR images is presented starting from basic radar equations.
Rolf Scheiber, Scheiber, Rolf, Kiyo Tomiyasu, Tomiyasu, Kiyo   +3 more
core   +1 more source

INDREX-II - Tropical Forest Height Estimation with L- and P-Band Polarimetric Interferometric SAR [PDF]

, 2006
Tropical forests are complex, heterogeneous, dense, remote and changing forest ecosystems. Low frequency synthetic aperture Radar (SAR) techniques allow monitoring and potentially estimation of key forest parameters such as vertical structure (height ...
Kugler, F., Hajnsek, Irena, Papathanassiou, K., Hoekman, D.H., Hoekman, Dirk, Kugler, Florian, Papathanassiou, Konstantinos, Hajnsek, I.   +7 more
core  

Polarimetric Calibration of a Bistatic SAR detector [PDF]

, 2010
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
core   +2 more sources

Polarimetric Calibration of CASMSAR P-Band Data Affected by Terrain Slopes Using a Dual-Band Data Fusion Technique

Remote Sensing, 2015
For airborne synthetic aperture radar (SAR) polarimetric calibration (PolCAL) based on distributed targets, it is important to ensure the removal of both the polarimetric distortion and terrain slope effect. This paper proposes a new technique for PolCAL
Lu Liao, Jie Yang, Pingxiang Li, Fenfen Hua   +3 more
doaj   +1 more source

Polarimetric PALSAR System Model Assessment and Calibration

IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium, 2008
Polarimetric PALSAR system parameters are assessed using data sets collected over various calibration sites. The data collected over the Amazonian forest permits validating the zero Faraday rotation hypotheses near the equator. The analysis of the Amazonian forest data and the response of the corner reflectors deployed during the PALSAR acquisitions ...
Ridha Touzi, Stefan Nedelcu, Masanobu Shimada   +2 more
openaire   +2 more sources

Analysis of Crosstalk Impact on the Cloude-decomposition-based Scattering Characteristic

Leida xuebao, 2017
Crosstalk is not only one of the main error sources in the polarimetric SAR system, but is also an indicator for evaluating calibration performance. In this paper, to determine the impact of crosstalk on land cover classification, we first retrieve the ...
Hu Dingsheng, Qiu Xiaolan, Lei Bin, Xu Feng   +3 more
doaj   +1 more source

Polarmetric Consistency Assessment and Calibration Method for Quad-Polarized ScanSAR Based on Cross-Beam Data

Remote Sensing
The range-dependence on polarization distortion of spaceborne polarimetric synthetic aperture radar (SAR) affects the accuracy of wide-swath polarization applications, such as environmental monitoring, sea ice classification and ocean wave inversion ...
Di Yin, Jitong Duan, Jili Sun, Liangbo Zhao, Xiaochen Wang, Songtao Shangguan, Lihua Zhong, Wen Hong   +7 more
doaj   +1 more source

Fully polarimetric radiometer system for airborne remote sensing [PDF]

, 2003
As a result of the increasing interest in polarimetric microwave radiometer measurements, a fully polarimetric radiometer system was developed and thoroughly tested in this work.
Lahtinen, Janne
core   +1 more source

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

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   +1 more source

SNR and Noise Variance Estimation in Polarimetric SAR Data [PDF]

, 2013
The problem of estimating the signal-to-noise ratio (SNR) of the cross-polarised channels and the noise variance in polarimetric synthetic aperture radar (SAR) data is dealt with.
Villano, Michelangelo, Papathanassiou, Konstantinos   +1 more
core