Results 91 to 100 of about 7,886 (195)

The Magnetic Topology of the Weak-Lined T Tauri Star V410 - A Simultaneous Temperature and Magnetic Field Inversion

open access: yes, 2012
We present a detailed temperature and magnetic investigation of the T Tauri star V410 Tau by means of a simultaneous Doppler- and Zeeman-Doppler Imaging.
Carroll, T. A.   +3 more
core   +1 more source

High Accuracy Near-infrared Imaging Polarimetry with NICMOS

open access: yes, 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.   +7 more
core   +1 more source

Using Red Clump Stars to Decompose the Galactic Magnetic Field with Distance

open access: yes, 2014
A new method for measuring the large-scale structure of the Galactic magnetic field is presented. The Galactic magnetic field has been probed through the Galactic disk with near-infrared starlight polarimetry, however the distance to each background star
Pavel, Michael D.
core   +1 more source

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

open access: yesSensors, 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   +3 more
doaj   +1 more source

Parallel decompositions of Mueller matrices and polarimetric subtraction [PDF]

open access: yesEPJ Web of Conferences, 2010
From a general formulation of the physically realizable parallel decompositions of the Mueller matrix M of a given depolarizing system, a procedure for determining the set of pure Mueller matrices susceptible to be subtracted from M is presented. This procedure provides a way to check if a given pure Mueller matrix N can be subtracted from M or not. If
openaire   +2 more sources

Use of Sub-Aperture Decomposition for Supervised PolSAR Classification in Urban Area

open access: yesRemote Sensing, 2015
A novel approach is proposed for classifying the polarimetric SAR (PolSAR) data by integrating polarimetric decomposition, sub-aperture decomposition and decision tree algorithm.
Lei Deng, Ya-nan Yan, Chen Sun
doaj   +1 more source

A Three-Component Polarimetric Target Decomposition Algorithm for Grasslands

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Previous polarimetric target decomposition methods have been widely used in forests and buildings and have achieved good results. However, there is a lack of corresponding modeling for the study of grassland scattering characteristics.
Baokun Liu   +8 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

open access: yesRemote 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

Mapping Glacierized Regions With Quad-Pol Dual Frequency LS-ASAR: Insights for the NISAR Mission

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
NISAR, a spaceborne L- and S-band radar mission, is set to launch in 2025. As part of mission testing, airborne L- and S-band radar sensors were employed to obtain dual-frequency quad-polarimetric (LS-ASAR) data in the United States. This study evaluates
Gopika Das   +8 more
doaj   +1 more source

Nearshore Ship Detection in PolSAR Images by Integrating Superpixel-Level GP-PNF and Refined Polarimetric Decomposition

open access: yesRemote Sensing
Nearshore ship detection has significant applications in both the military and civilian domains. Compared to synthetic aperture radar (SAR), polarimetric synthetic aperture radar (PolSAR) provides richer information for analyzing the scattering ...
Shujie Wu   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy