Results 11 to 20 of about 4,405,442 (293)

Defect Detection Algorithm for Wing Skin with Stiffener Based on Phased-Array Ultrasonic Imaging

Sensors, 2023
In response to the real-time imaging detection requirements of structural defects in the R region of rib-stiffened wing skin, a defect detection algorithm based on phased-array ultrasonic imaging for wing skin with stiffener is proposed.
Chuangui Wu, GuiLi Xu, Yimeng Shan, Xin Fan, Xiaohui Zhang, Yaxing Liu   +5 more
doaj   +2 more sources

Frequency-division-multiplexing technique for imaging metrology [PDF]

, 2014
An algorithm to multiplex multiple image captures simultaneously onto a single image sensor at full frame resolution was developed for imaging metrology. Parseval’s theorem was used to obtain the image intensity from image time-series of around typically
Bledowski, Ian A.
core   +7 more sources

Migration through Resolution Cell Correction and Sparse Aperture ISAR Imaging for Maneuvering Target Based on Whale Optimization Algorithm—Fast Iterative Shrinkage Thresholding Algorithm

Sensors
Targets faced by inverse synthetic aperture radar (ISAR) are often non-cooperative, with target maneuvering being the main manifestation of this non-cooperation.
Xinrong Guo, Fengkai Liu, Darong Huang
doaj   +2 more sources

A Millimeter-Wave 3D Imaging Algorithm for MIMO Synthetic Aperture Radar. [PDF]

Sensors (Basel), 2023
Multiple-input-multiple-output synthetic aperture radar (MIMO-SAR) is being studied and applied in more and more scenarios. However, there is still a certain distance away from real-time imaging using advanced algorithms.
Lin B, Li C, Ji Y, Liu X, Fang G.
europepmc   +2 more sources

Bi/multi-static Synthetic Aperture Radar Using Spaceborne Illuminator

Leida xuebao, 2023
Bi/multistatic Synthetic Aperture Radar (SAR) using spaceborne illuminator utilizes spaceborne platforms as transmitters and satellites, near-space vehicles, aircraft, and ground platforms as receivers, which allows high-resolution imaging of ground and ...
Junjie WU, Zhichao SUN, Zheng LV, Jianyu YANG, Caipin LI, Huarui SUN, Tianfu CHEN, Liangbo ZHAO, Hang REN   +8 more
doaj   +1 more source

Weighted Structured Sparse Reconstruction-Based Lamb Wave Imaging Exploiting Multipath Edge Reflections in an Isotropic Plate

Sensors, 2020
Lamb wave-based structural health monitoring techniques have the ability to scan a large area with relatively few sensors. Lamb wave imaging is a signal processing strategy that generates an image for locating scatterers according to the received Lamb ...
Caibin Xu, Zhibo Yang, Mingxi Deng
doaj   +1 more source

A Novel Imaging Algorithm for Wide-Beam Multiple-Receiver Synthetic Aperture Sonar Systems

Remote Sensing, 2023
In existing imaging algorithms for wide-beam multiple-receiver synthetic aperture sonar (SAS) systems, the double-square-root (DSR) range history of each receiver is generally converted into the sum of a single-square-root (SSR) range history and an ...
Jiafeng Zhang, Guangli Cheng, Jinsong Tang, Zhimin Xie, Haoran Wu   +4 more
doaj   +1 more source

An Improved UAV Bi-SAR Imaging Algorithm with Two-Dimensional Spatial Variant Range Cell Migration Correction and Azimuth Non-Linear Phase Equalization

Remote Sensing, 2023
The transmitter and receiver of unmanned aerial vehicle (UAV) bistatic synthetic aperture radar (Bi-SAR) are respectively carried on different UAV platforms, which has the advantages of flexible movement and strong concealment, and has broad application ...
Junjie Yan, Linghao Li, Han Li, Meng Ke, Xinnong Ma, Xinshuai Sun   +5 more
doaj   +1 more source

A Novel Imaging Algorithm for High-Resolution Wide-Swath Space-Borne SAR Based on a Spatial-Variant Equivalent Squint Range Model

Remote Sensing, 2022
High-Resolution Wide-Swath (HRWS) is an important development direction of space-borne Synthetic Aperture Radar (SAR). The two-dimensional spatial variation of the Doppler parameters is the most significant characteristic of the sliding spotlight space ...
Yanan Guo, Pengbo Wang, Jie Chen, Zhirong Men, Lei Cui, Lei Zhuang   +5 more
doaj   +1 more source

A Signal Model Based on the Space–Time Coding Array and a Novel Imaging Method Based on the Hybrid Correlation Algorithm for F-SCAN SAR

Remote Sensing, 2023
The F-SCAN principle is a better alternative to the scan-on-receive technique (SCORE) based on digital beamforming (DBF), which can avoid low gain caused by a conventional broad beam in the case of a wide swath.
Yuqing Liu, Pengbo Wang, Zhirong Men, Yanan Guo, Tao He, Rui Bao, Lei Cui   +6 more
doaj   +1 more source