Results 1 to 10 of about 1,145 (149)

Transmitting Pulse Encoding for Beyond-PRT Retransmitting Deception Jamming Detection in Spaceborne Synthetic Aperture Radar (SAR) [PDF]

open access: yesSensors, 2018
Retransmitting deception jamming (RDJ) degrades and misleads the Synthetic Aperture Radar (SAR) image interpretation by forming false targets. The beyond-Pulse Repetition Time (PRT) RDJ enlarges the effective jamming area without constraining the jammer ...
Ruijia Wang   +3 more
doaj   +7 more sources

Spaceborne synthetic aperture radar (SAR) motion compensation using autofocus [PDF]

open access: yesJournal of Engineering Science and Military Technologies, 2023
A common tool for remote sensing is Synthetic Aperture Radar (SAR).It is a very confident compared to other forms of remote sensing since ithas the advantages of operating with high efficiency in all weather andthroughout the day. In ideal circumstances,
Ahmed ELBohy   +3 more
doaj   +2 more sources

Spaceborne Multi-Baseline Synthetic Aperture Radar (SAR) Imaging [PDF]

open access: yesIGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium, 2023
Andreas Reigber   +2 more
exaly   +3 more sources

Efficient method for spaceborne synthetic aperture radar (SAR) geolocation and application to geometrical SAR image registration

open access: yesIET Radar, Sonar and Navigation, 2015
An efficient method for spaceborne synthetic aperture radar (SAR) geolocation is devised in this study. In this method, the pixels in the SAR image are divided into two types by a two‐dimensional (2D) grid, that is, grid pixels and non‐grid pixels. The approach of finding the position of a non‐grid pixel is to add the position of the adjacent grid ...
Jin‐wei Li   +3 more
exaly   +2 more sources

Polarimetric Distortion Analysis of L- and S-Band Airborne SAR (LS-ASAR): A Precursor Study of the Spaceborne Dual-Frequency L- and S-Band NASA ISRO Synthetic Aperture Radar (NISAR) Mission

open access: yesEngineering Proceedings, 2022
The polarimetric calibration (PolCal) is an essential process to ensure the minimization of distortions from airborne and spaceborne SAR data for scattering-based characterization of the targeted objects.
Shashi Kumar
doaj   +2 more sources

Accurate Range Modeling for High-Resolution Spaceborne Synthetic Aperture Radar [PDF]

open access: yesSensors
Spaceborne synthetic aperture radar (SAR) is an advanced microwave imaging technology that provides all-weather and all-day target information. However, as spaceborne SAR resolution improves, traditional echo signal models based on airborne SAR design ...
Haisheng Li, Junshe An, Xiujie Jiang
doaj   +2 more sources

Two-Dimensional Spatial Variation Analysis and Correction Method for High-Resolution Wide-Swath Spaceborne Synthetic Aperture Radar (SAR) Imaging

open access: yesRemote Sensing
With the development and application of spaceborne Synthetic Aperture Radar (SAR), higher resolution and a wider swath have become significant demands. However, as the resolution increases and the swath widens, the two-dimensional (2D) spatial variation between different targets in the scene and the radar becomes very pronounced, severely affecting the
Zhen Dong, Feng He, Zhenyu Hou
exaly   +3 more sources

Optimal Design of the Reflector Antenna to Improve Performance of C-Band Quad-Pol ScanSAR Systems [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2020
The performance of synthetic aperture radar (SAR) antenna determines the quality of images obtained from the spaceborne SAR system, and thus, SAR antenna should be designed to satisfy the target performance of SAR system.
Jung-Hwan Lim   +5 more
doaj   +1 more source

Ultra-High Resolution Imaging Method for Distributed Small Satellite Spotlight MIMO-SAR Based on Sub-Aperture Image Fusion

open access: yesSensors, 2021
Small satellite synthetic aperture radar (SAR) has become a new development direction of spaceborne SAR due to its advantages of flexible launch, short development cycle, and low cost.
Fang Zhou   +4 more
doaj   +1 more source

Spaceborne synthetic aperture radar (SAR) systems: state of the art and future developments [PDF]

open access: yes33rd European Microwave Conference Proceedings (IEEE Cat. No.03EX723C), 2003
This paper first summarizes the state of the art in spaceborne SAR systems and applications.The second part of this paper gives an overview of new concepts,techniques and technologies for future SAR systems,allowing an increase of flexibility in the SAR operation mode as well as a reduction in the overall system costs.Several innovative concepts and ...
Moreira, Alberto, Krieger, Gerhard
openaire   +3 more sources

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