Results 21 to 30 of about 48,172 (166)

Microwave Imaging and Emerging Applications [PDF]

open access: yesInternational Journal of Biomedical Imaging, 2012
Active microwave imaging for biomedical has been proposed, studied, and implemented to varying degrees by a plethora of worldwide institutions for the last 30 years. Much of the interest has been based on the fact that tissue dielectric properties embody important information about physiological state and function.
openaire   +3 more sources

Scattering-Point-Guided RPN for Oriented Ship Detection in SAR Images

open access: yesRemote Sensing, 2023
Ship detection in synthetic aperture radar (SAR) images has attracted widespread attention due to its significance and challenges. In recent years, numerous detectors based on deep learning have achieved good performance in the field of SAR ship ...
Yipeng Zhang   +3 more
doaj   +1 more source

Airborne SAR Imaging Algorithm for Ocean Waves Based on Optimum Focus Setting

open access: yesRemote Sensing, 2019
Ocean waves are the richest texture on the sea surface, from which valuable information can be inversed. In general, the Synthetic Aperture Radar (SAR) images of surface waves will inevitably be distorted due to the intricate motion of surface waves ...
Xiangfei Wei   +4 more
doaj   +1 more source

Medical Applications of Microwave Imaging [PDF]

open access: yesThe Scientific World Journal, 2014
Ultrawide band (UWB) microwave imaging is a promising method for the detection of early stage breast cancer, based on the large contrast in electrical parameters between malignant tumour tissue and the surrounding normal breast-tissue. In this paper, the detection and imaging of a malignant tumour are performed through a tomographic based microwave ...
Zhao Wang   +3 more
openaire   +3 more sources

Local Azimuth Ambiguity-to-Signal Ratio Estimation Method Based on the Doppler Power Spectrum in SAR Images

open access: yesRemote Sensing, 2019
In synthetic aperture radar (SAR) images, azimuth ambiguity is one of the important factors that affect image quality. Generally, the azimuth ambiguity-to-signal ratio (AASR) is a measure of the azimuth ambiguity of SAR images.
Hui Meng   +4 more
doaj   +1 more source

Reconfigurable integrated structures with functions of Fabry–Perot antenna and wideband liquid absorber for radar system stealth

open access: yesScientific Reports, 2023
This paper proposes a functionally reconfigurable integrated structure of a Fabry–Perot (FP) antenna and wideband liquid absorber. First, a two-layer partial reflecting surface (PRS) has been designed.
Yukun Zou   +4 more
doaj   +1 more source

Analysis and Compensation Method Research on the Channel Leakage Error for Three-baseline MMWInSAR

open access: yesLeida xuebao, 2013
In this paper, modeling of the channel leakage error of a three-baseline MMWInSAR (MilliMeter Wave Interferometric Synthetic Aperture Radar) is analyzed, and the mathematical expression of the error’s parameters and interference phase error is deduced ...
Qiao Ming   +3 more
doaj   +1 more source

Passive Radar Imaging of Moving Targets Using WiFi Signals

open access: yesLeida xuebao, 2015
In recent years, the wireless local networks are constructed rapidly and their coverage greatly increase. The passive radar imaging of moving targets using WiFi signals is studied in this paper, which may lead to wider applications of passive radars ...
Zhuang Xu-sheng   +3 more
doaj   +1 more source

Microwave Vision Three-dimensional SAR Experimental System and Full-polarimetric Data Processing Method

open access: yesLeida xuebao
Three-Dimensional (3D) Synthetic Aperture Radar (SAR) holds great potential for applications in fields such as mapping and disaster management, making it an important research focus in SAR technology. To advance the application and development of 3D SAR,
Xiaolan QIU   +9 more
doaj   +1 more source

A Polarization-Power-Maximum-Based 3-D Imaging Method for Ku-Band UAV-Borne Fully Polarimetric Array InSAR

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Fully polarimetric array InSAR (Pol-array-InSAR) can obtain 3-D position information and the polarization scattering characteristics of targets. In this article, we propose a polarization analysis-based processing framework for the synthetic aperture ...
Shujie Song   +6 more
doaj   +1 more source

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