Results 51 to 60 of about 48,172 (166)

Nonlinear Phase Reconstruction and Compensation Method Based on Orthonormal Complete Basis Functions in Synthetic Aperture Ladar Imaging Technology

Remote Sensing
By extending synthetic aperture technology from a microwave band to laser wavelength, the synthetic aperture ladar (SAL) achieves extremely high spatial resolution independent of the target distance in long-range imaging.
Ruihua Shi, Juanying Zhao, Dong Wang, Wei Li, Yinshen Wang, Bingnan Wang, Maosheng Xiang   +6 more
doaj   +1 more source

A Cross-Track Interferometric Synthetic Aperture 3D Passive Positioning Algorithm

Remote Sensing
High-precision, robust, and rapid three-dimensional (3D) passive positioning of the radiation source is critical for modern reconnaissance systems. While synthetic aperture technology has advanced 2D passive positioning performance, existing methods fail
Yuan Zhang, Xiangxi Bu, Sheng Guan, Jihao Xin, Zhiyu Jiang, Xuyang Ge, Miaomiao Li, Yanlei Li, Xingdong Liang   +8 more
doaj   +1 more source

A Channel-Adaptive Range-Doppler Domain Filtering Serial BAQ Algorithm and Comparative Analysis

Remote Sensing
With the growing demand for large-scale urban observation, multi-channel technology has become a cornerstone of high-resolution wide-swath SAR systems.
Tao Jiang, Fubo Zhang, Yi Xie, Chengwei Zhang, Longyong Chen, Yihao Xu, Haibo Tang   +6 more
doaj   +1 more source

Multi‐Area Controllable Suppression Jamming Method Against SAR Based on Two‐Dimensional Phase Mismatch

IET Radar, Sonar & Navigation
In the imaging process of SAR, the secondary phase mismatch can cause image defocusing. In this paper, a suppression jamming method against SAR based on two‐dimensional (2D) phase mismatch is proposed through a designed jammer system.
Guangyuan Li, GuiKun Liu, Zhenyang Xu, Haoming Xu, Zhengshuai Li, Peng Wang, Yueyang Zhang, Liang Li   +7 more
doaj   +1 more source

Three-dimensional localization method for underground targets based on spatial continuous sampling using acoustic excitation antenna circular array

Dianzi Jishu Yingyong
Acoustic excitation antenna technology enables a significant reduction in antenna size, facilitating miniaturization of ground penetrating radar systems in the very high-frequency (VHF) band.
Ju Chaowen, Liu Yixuan, Cheng Xinger, Zhang Zhuo   +3 more
doaj   +1 more source

A Simple Microwave Imaging System for Food Product Inspection through a Symmetry-Based Microwave Imaging Approach. [PDF]

Sensors (Basel), 2023
Bellizzi G, Buzzin A, Crocco L, Mastrandrea A, Zeni N, Zumbo S, Cavagnaro M.   +6 more
europepmc   +1 more source

Refining Constraints on the Origin of Lunar Irregular Mare Patches via Mini-RF and DFSAR Data Analysis

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Irregular mare patch (IMP) is one of the most enigmatic volcanic features in the lunar nearside maria. Their apparently fresh surface morphology and derived young model ages contradict the currently proposed thermal evolution history of the Moon.
Fei Zhao, Yao Gao, Yanan Dang, Pingping Lu, Tingyu Meng, Tianyuan Yang, Robert Wang   +6 more
doaj   +1 more source

MFE-STN: A Versatile Front-End Module for SAR Deception Jamming False Target Recognition

Remote Sensing
Advanced deception countermeasures now enable adversaries to inject false targets into synthetic-aperture-radar (SAR) imagery, generating electromagnetic signatures virtually indistinguishable from genuine targets, thus destroying the separability ...
Liangru Li, Lijie Huang, Tingyu Meng, Cheng Xing, Tianyuan Yang, Wangzhe Li, Pingping Lu   +6 more
doaj   +1 more source

Improved Methods for Fourier-Based Microwave Imaging. [PDF]

Sensors (Basel), 2023
Alvarez López Y, Las-Heras Andrés F.
europepmc   +1 more source

A Novel Jamming Method Based on Micro‐Doppler Modulation and Electromagnetic Meta‐Materials

IET Radar, Sonar & Navigation
The rotating corner reflector is widely used in passive jamming methods because of its micro‐Doppler modulation effect on the echo signal of synthetic aperture radar.
Guikun Liu, Honglin Li, Feng Ming, Liang Li, Jingwen Mou, Chen Song, Zhengshuai Li, Peng Wang   +7 more
doaj   +1 more source