Results 111 to 120 of about 159,428 (230)

Spaceborne to UAV Bistatic Radar System for High-resolution Imaging and Autonomous Navigation [PDF]

open access: yes, 2010
Bistatic radars offer several advantages when compared to their monostatic counterparts. In addition to increased per- formance, sensitivity, coverage and revisit times, all of them parameters which are mainly dependent on their spatial configuration ...
del Monte, Luca   +4 more
core  

Automatic Extraction Method of Road Intersection Center Points From Spaceborne SAR Images

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Road intersections are stable and widely distributed features in spaceborne synthetic aperture radar (SAR) imagery, serving as high-precision ground control points for geometric correction and geolocation. However, automatic detection and accurate center-
Ruishan Zhao   +5 more
doaj   +1 more source

Earth Observation with SAR Satellite Formations: New Techniques and Innovative Products [PDF]

open access: yes, 2009
This paper discusses the use of small satellites for future radar remote sensing applications. After a short introduction, we give first an overview of the TanDEM-X mission to be launched in autumn 2009. Here, special emphasis is put on the demonstration
Moreira, Alberto   +2 more
core  

Active Blanket Jamming Suppression Method for Spaceborne SAR Images Based on Regional Feature Refinement Perceptual Learning

open access: yesLeida xuebao
Spaceborne Synthetic Aperture Radar (SAR) systems are often subject to strong electromagnetic interference, resulting in imaging quality degradation. However, existing image domain-based interference suppression methods are prone to image distortion and ...
Lin NIE   +7 more
doaj   +1 more source

A Novel PRI Variation Strategy for Range Ambiguity Suppression in Quad-Pol Staggered Spaceborne SAR Based on Azimuth Phase Coding

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Staggered synthetic aperture radar (SAR) is compatible with quadrature-polarimetric (quad-pol) SAR, enabling ultrawide continuous swath quad-pol SAR imaging with fine azimuth resolution.
Ruizhen Song   +4 more
doaj   +1 more source

Ultra Wide Swath Imaging With Multi-Channel SAR Systems [PDF]

open access: yes, 2008
Multi-channel radar systems allow for overcoming the inherent limitation of conventional synthetic aperture radar (SAR). An example is the combination of digital beamforming on receive in elevation with multi-aperture SAR signal reconstruction in azimuth
Bordoni, Federica   +4 more
core  

Application of Quasi-Continuous Waveform Coding in Spaceborne Synthetic Aperture Radar

open access: yesRemote Sensing
Quasi-continuous wave radar is an attempt to give consideration to the performance of pulse and continuous wave radar signals. However, it also has the shortcomings of both.
Weizheng Shao   +4 more
doaj   +1 more source

Advanced Digital Beamforming Concepts for High Performance Synthetic Aperture Radar (SAR) Imaging [PDF]

open access: yes, 2009
This paper reviews advanced multi-channel SAR system concepts for the imaging of wide swaths with high resolution. Several novel system architectures employing both direct radiating arrays and reflector antennas fed by a digitial array are introduced ...
Patyuchenko, Anton   +6 more
core  

TANDEM-X: A RADAR INTERFEROMETER WITH TWO FORMATION FLYING SATELLITES [PDF]

open access: yes, 2012
TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurements) is an innovative formation flying radar mission that opens a new era in spaceborne radar remote sensing.
Zink, Manfred   +2 more
core  

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