Results 31 to 40 of about 9,296 (290)

CHALLENGES AND POTENTIALS USING MULTI ASPECT COVERAGE OF URBAN SCENES BY AIRBORNE SAR ON CIRCULAR TRAJECTORIES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
Airborne SAR on small and flexible platforms guarantees the evaluation of local damages after natural disasters and is both weather and daylight independent.
S. Palm, N. Pohl, U. Stilla
doaj   +1 more source

Polarimetric Decomposition With an Urban Area Descriptor for Compact Polarimetric SAR Data

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
The compact polarimetric (CP) synthetic aperture radar (SAR) can alleviate the drawbacks of the fully polarimetric (FP) SAR and provide more target information as compared to the conventional single polarimetric and dual polarimetric mode.
Qiang Yin   +4 more
doaj   +1 more source

An Innovative Synthetic Aperture Radar Design Method for Lunar Water Ice Exploration

open access: yesRemote Sensing, 2022
Owing to the Moon’s rough surface, there is a growing controversy over the conclusion that water ice exists in the lunar permanently shadowed regions (PSRs) with a high circular polarization ratio (CPR).
Yanyan Zhang   +4 more
doaj   +1 more source

Study on the Effect of Non-Symmetrical Current Distribution Controlled by Capacitor Placement in Radio-Frequency Coils for 7T MRI

open access: yesBiosensors, 2022
In this paper, we present a study on the effects of varying the position of a single tuning capacitor in a circular loop coil as a mechanism to control and produce non-symmetric current distribution, such that could be used for magnetic resonance imaging
Daniel Hernandez   +4 more
doaj   +1 more source

UAV-Based Bistatic SAR-Imaging Using a Stationary Repeater

open access: yesIEEE Journal of Microwaves, 2023
Synthetic aperture radar (SAR) is an established technique for high-resolution radar imaging relying on the ego-motion of the radar. The long coherent integration time of the radar in conjunction with a linear or circular trajectory enables the ...
Alexander Grathwohl   +4 more
doaj   +1 more source

New imaging method for airborne circular trace stripmap SAR

open access: yesThe Journal of Engineering, 2019
Circular trace stripmap synthetic aperture radar (SAR) (CTS-SAR) is a new operation mode presented recently. Compared with linear trace stripmap SAR and staring SAR, it is similar to them. Meanwhile, it shows some unique features.
Yu Hui   +3 more
doaj   +1 more source

Ionospheric Sounding Based on Spaceborne PolSAR in P-Band

open access: yesAtmosphere, 2022
The signal of spaceborne low-frequency full-polarization synthetic aperture radar (full-pol SAR) contains abundant ionospheric information. Phased Array L-band Synthetic Aperture Radar (PALSAR) working in the L-band has been verified as an emerging ...
Wulong Guo   +8 more
doaj   +1 more source

Ocean Surface Wind Speed Retrieval Using Simulated RADARSAT Constellation Mission Compact Polarimetry SAR Data

open access: yesRemote Sensing, 2019
We investigated the use of C-band RADARSAT Constellation Mission (RCM) synthetic aperture radar (SAR) for retrieval of ocean surface wind speeds by using four new channels (right circular transmit, vertical receive (RV); right circular transmit ...
He Fang   +7 more
doaj   +1 more source

Moving target detection and characterization with circular SAR [PDF]

open access: yes2010 IEEE Radar Conference, 2010
In this work, we examine ground target detection and characterization from radar data, which incorporates a modelbased optimization method called dynamic logic (DL). We apply our methodology to a prototype airborne radar platform called Gotcha, developed by the Air Force Research Laboratory/Sensors Directorate/Automatic Target Recognition Division in ...
Leonid Perlovsky   +4 more
openaire   +1 more source

Research Progress on Three-dimensional SAR Imaging Techniques

open access: yesLeida xuebao, 2018
Conventional Synthetic Aperture Radar (SAR) moves along a straight line and forms a linear synthetic apertures. It can only obtain the two-dimensional (2-D) image of illuminated scene that is the projection of the three-dimensional (3-D) real scene onto ...
Hong Wen   +4 more
doaj   +1 more source

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