Results 31 to 40 of about 1,729,562 (203)

Analysis of Geometric Characteristics and Coverage for Moon-Based/Spaceborne Bistatic SAR Earth Observation

open access: yesRemote Sensing, 2023
With the rapid development of Earth system science, a new understanding of the complete Earth system has highlighted the crucial importance of integrated observations, especially in research involving large-scale geoscience phenomena. As an active sensor
Ke Zhang   +3 more
doaj   +1 more source

Capability of a Ground-Based Passive Surveillance System to Detect and Track Spaceborne SAR in LEO Orbits

open access: yesRemote Sensing, 2022
Monitoring the Earth’s surface from the low Earth orbit (LEO) by synthetic aperture radar (SAR) provides meaningful information about a number of human activities such as the ecosystem, agriculture, and of course security matters. During its operation in
David Novák   +2 more
doaj   +1 more source

Multidimensional Radar Waveforms: A New Paradigm for the Design and Operation of Highly Performant Spaceborne Synthetic Aperture Radar Systems [PDF]

open access: yes, 2007
This paper introduces and analyses the innovative paradigm of multidimensional waveform encoding for spaceborne synthetic aperture radar (SAR). The combination of this technique with digital beamforming on receive enables a new class of highly ...
Alberto Moreira   +5 more
core   +1 more source

Design and Performance of X-Band SAR Payload for 80 kg Class Flat-Panel-Type Microsatellite Based on Active Phased Array Antenna

open access: yesAerospace, 2022
The small synthetic aperture radar (SAR) technology experimental project (S-STEP) mission aims to develop an innovative spaceborne SAR microsatellite as a constellation of 32 microsatellites featuring a high-resolution stripmap mode of 1 m. The S-STEP is
Seok Kim   +4 more
doaj   +1 more source

Performance Investigation on the High-Resolution Wide-Swath SAR System Operating in Stripmap Quad-Pol and Ultra-Wide Scansar Mode [PDF]

open access: yes, 2011
The High-Resolution Wide-Swath (HRWS) is the spaceborne Synthetic Aperture Radar system, promoted by the German Aerospace Centre, conceived to obtain simultaneously high spatial resolution and width swaths.
Bordoni, Federica   +5 more
core   +1 more source

TIME SERIES OF SALT CRUSTS IMAGED BY A DUAL POLARIZATION SPACEBORNE SYNTHETIC APERTURE RADAR (SAR) AT C-BAND OVER AN ANDEAN ALTIPLANO SALAR OF NORTHERN CHILE [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Abstract. A dense time series of Synthetic Aperture Radar acquisitions at 6-day intervals between July 2017 to January 2019 collected with the C-band constellation Sentinel 1A and 1B is used to study salt crust evolution in an highland salar. Microwave response of halite crystal aggregates is linked to surface roughness of the salt crusts by means of a
M. Barber   +4 more
openaire   +3 more sources

Development of SAR Image Quality Performance Analysis Tool for High Resolution Spaceborne Synthetic Aperture Radar [PDF]

open access: yesJournal of the Korean Society for Aeronautical & Space Sciences, 2010
In this paper, the typical Synthetic Aperture Radar (SAR) image quality parameters and analysis method are defined, and the SAR image analysis tool is presented for SAR image evaluation. The structure of the developed SAR image analysis tool consists of four key modules; point target analysis (PTA) module, distributed target analysis (DTA) module ...
Tae-Bong Oh   +4 more
openaire   +1 more source

Bi/multi-static Synthetic Aperture Radar Using Spaceborne Illuminator

open access: yesLeida xuebao, 2023
Bi/multistatic Synthetic Aperture Radar (SAR) using spaceborne illuminator utilizes spaceborne platforms as transmitters and satellites, near-space vehicles, aircraft, and ground platforms as receivers, which allows high-resolution imaging of ground and ...
Junjie WU   +8 more
doaj   +1 more source

Advanced Synthetic Aperture Radar Based on Digital Beamforming and Waveform Diversity [PDF]

open access: yes, 2008
This paper introduces innovative SAR system concepts for the acquisition of high resolution radar images with wide swath coverage from spaceborne platforms.
Alberto Moreira   +7 more
core   +1 more source

Oil Spill Detection in Quad-Polarimetric SAR Images Using an Advanced Convolutional Neural Network Based on SuperPixel Model

open access: yesRemote Sensing, 2020
Oil spill detection plays an important role in marine environment protection. Quad-polarimetric Synthetic Aperture Radar (SAR) has been proved to have great potential for this task, and different SAR polarimetric features have the advantages to recognize
Jin Zhang   +5 more
doaj   +1 more source

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