Results 21 to 30 of about 9,296 (290)

Research on Full-aspect Three-dimensional SAR Imaging Method for Complex Structural Facilities without Prior Model

open access: yesLeida xuebao, 2022
SAR three-Dimensional (3D) imaging of complex structural facilities is an important and challenging issue in SAR imaging. The existing 3D SAR imaging relies on multiple channels or flights in the elevation direction, exerting high demands on the radar ...
Yun LIN   +6 more
doaj   +1 more source

Enhancement of SAR Image Resolution with Implementation of Circular GB-SAR System

open access: green, 2013
Radars were used for surveillance and remote sensing but nowadays they handle a vast range of applications, radar imagery being one of them. The need for high resolution images was inevitable which lead to Synthetic Aperture Radar (SAR) systems. SAR plays a prominent role in remote sensing applications and geophysical studies.
Dheeraj Nehru Neravati
openaire   +2 more sources

Curved Synthetic Aperture Radar for Near-Field Terahertz Imaging

open access: yesIEEE Photonics Journal, 2023
High resolution imaging techniques will play an essential role in the future smart imaging applications to provide potential solutions for accurate detection, monitoring and classification of the target.
Mavis Gezimati, Ghanshyam Singh
doaj   +1 more source

Airborne Circularly Polarized Synthetic Aperture Radar

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
In this article, airborne broadband (maximum 400 MHz bandwidth) C-band circularly polarized synthetic aperture radar (SAR) is proposed and developed for further study on airborne compact polarized synthetic aperture radar (CP SAR) system using circular ...
Josaphat Tetuko Sri Sumantyo   +21 more
doaj   +1 more source

A Sidelobe Suppression Method for Circular Ground-Based SAR 3D Imaging Based on Sparse Optimization of Radial Phase-Center Distribution

open access: yesRemote Sensing, 2022
Circular ground-based SAR (GBSAR) is a new 3D imaging GBSAR with the potential of acquiring high-quality 3D SAR images and 3D deformation. However, its donut-shaped spectrum and short radius of antenna rotation cause high sidelobes on 3D curved surfaces,
Qiming Zhang   +3 more
doaj   +1 more source

Tomographic 3D reconstruction from airborne circular SAR [PDF]

open access: yes2009 IEEE International Geoscience and Remote Sensing Symposium, 2009
The study of data acquired over a circular trajectory has raised an increasing interest in the SAR community. Two main reasons summarize the interest in such geometry. First, sub-wavelength resolution can be achieved, as the targets in the spotted area are observed under a 360o aperture.
Pinheiro, Muriel   +4 more
openaire   +2 more sources

Multi-Circular SAR Three-Dimensional Image Formation via Group Sparsity in Adjacent Sub-Apertures

open access: yesRemote Sensing, 2022
Multi-circular SAR(MCSAR) can obtain holographic three-dimensional (3D) images of interesting observation targets, which is a significant research field at present.
Weixing Yang, Daiyin Zhu
doaj   +1 more source

Multi-Layered Circular Dielectric Structures’ Synthetic Aperture Radar Imaging Based on Green’s Function Using Non-Uniform Measurements

open access: yesRemote Sensing, 2020
The electromagnetic imaging of multi-layered circular structures can be accomplished by means of different approaches. Among these approaches, the use of synthetic aperture radar (SAR) techniques with the compensation of the Green’s function for multi ...
Baolong Wu   +2 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

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

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