Results 21 to 30 of about 768,249 (233)

Concept, System, and Method of Holographic Synthetic Aperture Radar

open access: yesLeida xuebao, 2020
Over time, Synthetic Aperture Radar (SAR) imaging techniques have been developed from twodimensional SAR, two-and-a-half-dimensional SAR (InSAR), and three-dimensional SAR to multi-dimensional SAR. This has led to great technological achievements.
DING Chibiao, QIU Xiaolan, WU Yirong
doaj   +1 more source

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

CLEAN technique in strip-map SAR for high-quality imaging [PDF]

open access: yes, 2009
The maximum obtainable resolution of a strip-map synthetic aperture radar (SAR) system can be retained by simply avoiding weighting, or tapering, data samples in the along-track compression process.
Michele Galletti   +17 more
core   +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

Staggered-SAR for High-Resolution Wide-Swath Imaging [PDF]

open access: yes, 2012
Synthetic aperture radar (SAR) is a remote sensing technique, capable of providing high resolution images independent of weather conditions and sunlight illumination.
Villano, Michelangelo   +5 more
core   +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

A SAR conjugate mirror [PDF]

open access: yes, 2006
A radar transponder was constructed, which modifies the received signal such that its complex conjugate is returned to the radar, qualities of the conjugate mirror used in optics and acoustics.
Hounam, David
core   +1 more source

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