scholarly journals Ultra-High Resolution Imaging Method for Distributed Small Satellite Spotlight MIMO-SAR Based on Sub-Aperture Image Fusion

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1609
Author(s):  
Fang Zhou ◽  
Jun Yang ◽  
Lu Jia ◽  
Xingming Yang ◽  
Mengdao Xing
Keyword(s):  
High Resolution ◽  
Low Cost ◽  
Multiple Input Multiple Output ◽  
Imaging Method ◽  
High Resolution Imaging ◽  
Small Satellite ◽  
Fusion Algorithm ◽  
Large Bandwidth ◽  
Input Multiple Output ◽  
Resolution Imaging

Small satellite synthetic aperture radar (SAR) has become a new development direction of spaceborne SAR due to its advantages of flexible launch, short development cycle, and low cost. However, there are fewer researches on distributed small satellite multiple input multiple output (MIMO) SAR. This paper proposes an ultra-high resolution imaging method for the distributed small satellite spotlight MIMO-SAR, which applies the sub-aperture division technique and the sub-aperture image coherent fusion algorithm to MIMO-SAR. After deblurring the sub-aperture signal, the large bandwidth signal is obtained by using an improved time domain bandwidth synthesis (TBS) method, and then the ultra-high resolution image is obtained by using a sub-aperture image coherent fusion algorithm. Simulation results validate the feasibility and effectiveness of the proposed approach.

scholarly journals A fast decoupled ISAR high-resolution imaging method using structural sparse information under low SNR

2019 ◽  
Vol 30 (03) ◽  
pp. 492-503
Author(s):  
Long Xiang ◽  
◽  
Shaodong Li ◽  
Jun Yang ◽  
Wenfang Chen ◽  
...  
Keyword(s):  
High Resolution ◽  
Imaging Method ◽  
High Resolution Imaging ◽  
Low Snr ◽  
Resolution Imaging

Design and Validation of a Low-Cost Microscope for Diagnostics in the Developing World

2009 ◽  
Vol 17 (6) ◽  
pp. 16-19 ◽  
Author(s):  
B. Cline ◽  
R. Luo ◽  
K. Kuhlmann
Keyword(s):  
High Resolution ◽  
Infectious Diseases ◽  
Developing World ◽  
Low Cost ◽  
High Resolution Imaging ◽  
Microscope Examination ◽  
Resource Limited Settings ◽  
Resource Limited ◽  
Resolution Imaging

Many infectious diseases prevalent in the developing world, including malaria and tuberculosis, are difficult to diagnose on the basis of symptoms alone but can be accurately detected using microscope examination. Currently the expense, size, and fragility of optical microscopes impede their widespread use in resource-limited settings. Addressing these obstacles facing microscopy in the developing world is a pressing need; over 800,000 people, primarily children in Africa, die annually of malaria, and more than 1,500,000 people die annually of tuberculosis [1][2]. The aim of this study is to design and validate a microscope for use in the developing world that combines high-resolution imaging, extreme affordability, and long-term durability.

scholarly journals Fast high-resolution imaging method for wide-band rotating targets

2019 ◽  
Vol 2019 (20) ◽  
pp. 6987-6990
Author(s):  
Hu Xiang ◽  
Shaodong Li ◽  
Long Xiang ◽  
Wenfeng Chen ◽  
Jun Yang
Keyword(s):  
High Resolution ◽  
Wide Band ◽  
Imaging Method ◽  
High Resolution Imaging ◽  
Resolution Imaging

scholarly journals A Novel High-Resolution Imaging Method Using Reduced-Dimension Beamspace Unitary MUSIC for OFDM-MIMO Radar

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 43676-43689
Author(s):  
Jingjing Zhao ◽  
Yongxiang Liu ◽  
Kai Huo ◽  
Xinyu Zhang ◽  
Bo Xiao
Keyword(s):  
High Resolution ◽  
Mimo Radar ◽  
Imaging Method ◽  
High Resolution Imaging ◽  
Resolution Imaging ◽  
Reduced Dimension

scholarly journals A low-cost microwell device for high-resolution imaging of neurite outgrowth in 3D

2018 ◽  
Vol 15 (3) ◽  
pp. 035001
Author(s):  
Yuan Ren ◽  
Michael J Mlodzianoski ◽  
Aih Cheun Lee ◽  
Fang Huang ◽  
Daniel M Suter
Keyword(s):  
High Resolution ◽  
Neurite Outgrowth ◽  
Low Cost ◽  
High Resolution Imaging ◽  
Resolution Imaging
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