High Resolution Imaging Method of Tomography SAR Based on Spatial Spectrum Estimation

2013 ◽  
Author(s):  
Liu Xiangle
Keyword(s):  
High Resolution ◽  
Spatial Spectrum ◽  
Imaging Method ◽  
High Resolution Imaging ◽  
Spectrum Estimation ◽  
Resolution Imaging ◽  
Spatial Spectrum Estimation

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

Complex Angle Measuring Method of Passive-Radar-Seeker

2011 ◽  
Vol 55-57 ◽  
pp. 272-275 ◽  
Author(s):  
Chun Na Zhao ◽  
Chang Di Shi ◽  
Yu Zhao ◽  
Yi Liu
Keyword(s):  
High Resolution ◽  
Measuring Method ◽  
Spatial Spectrum ◽  
Passive Radar ◽  
Spectrum Estimation ◽  
Angle Measuring ◽  
Simulation Results ◽  
Spatial Spectrum Estimation

To overcome the shortcomings of the traditional passive-radar-seeker(PRS) for anti-decoy, a complex angle measuring method is proposed in this letter. The complex angle measuring method consists of monopulse angle and spatial spectrum estimation, two angle-measuring units. PRS can get the angle high-resolution features through the complex angle measuring method. So it is possible that PRS confronts decoy. Finally, the simulation results verify the feasibility and anti-decoy capacity of the complex angle-measuring method.

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 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.

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