Results 31 to 40 of about 61,185 (361)

Segmentation Of SAR Images

open access: yesInternational Geoscience and Remote Sensing Symposium, 'Remote Sensing: Moving Toward the 21st Century'., 1989
Based on an SAR speckle statistical model, the authors investigate the feasibility of segmenting SAR images based on a gray-level histogram for one-look and multilook processed SAR images. The classification errors are evaluated and a procedure for the multilevel thresholding of SAR images is devised.
Lee, J.-S., Jurkevich, I.
openaire   +2 more sources

Present Situation and Prospect of Missile-borne Radar Imaging Technology

open access: yesLeida xuebao, 2022
The missile-borne SAR may create high-resolution two-dimensional images of the observation area to gather detailed geomorphological information and information on the size and shape of the target, thereby helping to choose the attack place and enhancing ...
Yachao LI   +3 more
doaj   +1 more source

Synthetic Aperture Radar Learning-imaging Method Based on Data-driven Technique and Artificial Intelligence

open access: yesLeida xuebao, 2020
One of the most important research fields in Synthetic Aperture Radar (SAR) technology is to improve the accuracies of the number, location, classification, and other parameters of targets of interest.
LUO Ying, NI Jiacheng, ZHANG Qun
doaj   +1 more source

Progressive SAR imaging technique [PDF]

open access: yes2010 IEEE International Geoscience and Remote Sensing Symposium, 2010
A progressive SAR imaging technique is proposed as a novel SAR raw data processing scheme in this paper. Different from the classic SAR imaging algorithms which focus the SAR raw data as a whole regardless of the backscattering signal, the novel scheme discriminate the backscattering signal and choose the proper ones to be focused progressively ...
Kaizhi Wang   +4 more
openaire   +1 more source

Forward-Looking MIMO-SAR for Enhanced Radar Imaging in Autonomous Mobile Robots

open access: yesIEEE Access, 2023
Synthetic aperture radar (SAR) techniques are commonly used in spaceborne and airborne side-looking radar imaging applications, where the relatively high platform speeds enable the formation of very long synthetic apertures, which provide images with ...
Adnan Albaba   +4 more
doaj   +1 more source

Two-dimensional deceptive jamming mitigation algorithm for SAR imaging using frequency diverse array

open access: yesThe Journal of Engineering, 2019
The synthetic aperture radar (SAR) may be threatened greatly by the deceptive jamming within its main-lobe. To tackle this problem, a two-dimensional self-adaptive frequency diverse array (FDA)-based SAR processing scheme is proposed in this study ...
Chenchen Lin   +3 more
doaj   +1 more source

An Efficient Multichannel SAR Channel Phase Error Calibration Method Based on Fine-Focused HRWS SAR Image Entropy

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Azimuth multichannel synthetic aperture radar (SAR) is a useful approach to solving minimum antenna area constraint and realizing high resolution and wide swath (HRWS) imaging by multichannel signal reconstruction.
Jixiang Xiang   +5 more
doaj   +1 more source

PSF Analysis and Ground Test Results of a Novel Circular Array 3-D SAR System

open access: yesLeida xuebao, 2018
Array Synthetic Aperture Radar (ASAR) system radar imaging field has gained attention because of its three-dimensional (3-D) imaging ability. A novel Circular Array SAR (CASAR) system is employed for 3-D high-resolution radar imaging to overcome the ...
Ming Jing   +3 more
doaj   +1 more source

Along-Track Swarm SAR: Echo Modeling and Sub-Aperture Collaboration Imaging Based on Sparse Constraints

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
This article proposes an along-track swarm synthetic aperture radar (ATS-SAR) system to accomplish the high frame rate and enhance imaging resolution simultaneously.
Nan Jiang   +4 more
doaj   +1 more source

Fractal parameters and SAR images [PDF]

open access: yes2008 IEEE Radar Conference, 2008
The fractal geometry proved to be the most appropriate mathematical instrument in describing natural scenes, by means of few effective and reliable geophysical parameters. In this paper we describe a complete processing chain for the retrieving of SAR image fractal parameters and for change detection purposes.
DI MARTINO, GERARDO   +3 more
openaire   +2 more sources

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