Results 1 to 10 of about 14,656 (310)

Radar Forward-Looking Super-Resolution Imaging Algorithm of ITR-DTV Based on Renyi Entropy

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Radar forward-looking super-resolution imaging is a hot spot in the field of radar imaging research. Restricted by Doppler bandwidth and platform size, traditional high-resolution synthetic aperture imaging and real aperture imaging are not suitable for ...
Min Bao   +3 more
doaj   +3 more sources

Photonics-Based High-Resolution 3D Inverse Synthetic Aperture Radar Imaging

open access: yesIEEE Access, 2019
A photonics-based radar for high-resolution 3D microwave imaging is proposed and demonstrated, in which high range resolution is achieved by employing a wideband linearly frequency modulated signal, and high cross-range resolution in both azimuth and ...
Xingwei Ye   +4 more
doaj   +3 more sources

Very High Resolution Synthetic Aperture Radar Systems and Imaging: A Review

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Given its capacity to generate 2-D fine images of observation areas, very high resolution (VHR) synthetic aperture radar (SAR) has become increasingly popular in myriad fields, including remote sensing, geoscience, and surveillance.
Xing Chen   +5 more
doaj   +3 more sources

Inverse Synthetic Aperture Radar Imaging: A Historical Perspective and State-of-the-Art Survey

open access: yesIEEE Access, 2021
Radar can obtain high spatial resolution at large operating distances, and its operation is largely independent from weather and lighting conditions. This makes it an important instrument in an ever-increasing number of applications requiring robust and ...
Risto Vehmas, Nadav Neuberger
doaj   +1 more source

Compressive Sensing-Based Radar Imaging and Subcarrier Allocation for Joint MIMO OFDM Radar and Communication System

open access: yesSensors, 2021
In this paper, a joint multiple-input multiple-output (MIMO OFDM) radar and communication (RadCom) system is proposed, in which orthogonal frequency division multiplexing (OFDM) waveforms carrying data to be transmitted to the information receiver are ...
SeongJun Hwang   +4 more
doaj   +1 more source

3D High-resolution Imaging Algorithm with Sparse Trajectory for Millimeter-wave Radar

open access: yesLeida xuebao, 2023
In recent years, millimeter-wave radar has been widely used in safety detection, nondestructive detection of parts, and medical diagnosis because of its strong penetration ability, small size, and high detection accuracy.
Yuxin MA   +6 more
doaj   +1 more source

Radar Forward-looking Super-resolution Imaging Method Based on Sparse and Low-rank Priors

open access: yesLeida xuebao, 2023
Radar forward-looking imaging is important in many fields, such as precision guidance, autonomous landing, and terrain mapping. Due to the constraints of actual radar aperture, obtaining high-resolution images using the traditional forward-looking ...
Junkui TANG   +4 more
doaj   +1 more source

Tunable High‐Resolution Synthetic Aperture Radar Imaging

open access: yesRadio Science, 2022
AbstractWe have recently introduced a modification of the multiple signal classification method for synthetic aperture radar. This method incorporates a user‐defined parameter, ϵ, that allows for tunable quantitative high‐resolution imaging. However, this method requires relatively large single‐to‐noise ratios (SNR) to work effectively.
Chrysoula Tsogka, Arnold D Kim
openaire   +2 more sources

Synthetic Aperture Imaging of Antenna Array Coded

open access: yesLeida xuebao, 2023
The theoretical azimuth resolution of Synthetic Aperture Radar (SAR) is half the antenna length, presenting conflicting requirements on the antenna for SAR high-resolution and long-distance imaging.
Yanfei WANG, Heping LI, Song HAN
doaj   +1 more source

High-resolution Sparse Self-calibration Imaging for Vortex Radar with Phase Error

open access: yesLeida xuebao, 2021
The Orbital Angular Momentum (OAM)-based vortex radar has drawn increasing attention because of its potential for high-resolution imaging. The vortex radar high resolution imaging with limited OAM modes is commonly solved by sparse recovery, in which the
Haiyou QU   +3 more
doaj   +1 more source

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