scholarly journals Inverse synthetic aperture ladar imaging algorithm for space spinning targets

2019 ◽  
Vol 2019 (21) ◽  
pp. 7619-7623
Author(s):  
Yakun Lv ◽  
Yanhong Wu ◽  
Hongyan Wang ◽  
Lei Qiu
Keyword(s):  
Synthetic Aperture ◽  
Imaging Algorithm ◽  
Spinning Targets

Inverse Synthetic Aperture Ladar Imaging Algorithm for Spinning Targets

2013 ◽  
Vol 42 (10) ◽  
pp. 1238-1243 ◽  
Author(s):  
阮航 RUAN Hang ◽  
吴彦鸿 WU Yan-hong ◽  
贾鑫 JIA Xin ◽  
叶伟 YE Wei
Keyword(s):  
Synthetic Aperture ◽  
Imaging Algorithm ◽  
Spinning Targets

scholarly journals REGULARIZATION IMAGING ALGORITHM WITH ACCURATE G MATRIX FOR NEAR-FIELD MMW SYNTHETIC APERTURE IMAGING RADIOMETER

2014 ◽  
Vol 58 ◽  
pp. 193-203 ◽  
Author(s):  
Jianfei Chen ◽  
Yuehua Li ◽  
Jianqiao Wang ◽  
Yuanjiang Li ◽  
Yilong Zhang
Keyword(s):  
Near Field ◽  
Synthetic Aperture ◽  
Synthetic Aperture Imaging ◽  
Imaging Algorithm

scholarly journals An Inverse Synthetic Aperture Ladar Imaging Algorithm of Maneuvering Target Based on Integral Cubic Phase Function-Fractional Fourier Transform

Electronics ◽  
2018 ◽  
Vol 7 (8) ◽  
pp. 148 ◽  
Author(s):  
Yakun Lv ◽  
Yanhong Wu ◽  
Hongyan Wang ◽  
Lei Qiu ◽  
Jiawei Jiang ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Phase Function ◽  
Fractional Fourier Transform ◽  
Doppler Frequency ◽  
Synthetic Aperture ◽  
Cubic Phase ◽  
Echo Signal ◽  
Imaging Algorithm ◽  
Maneuvering Target ◽  
Cubic Phase Function

When imaging maneuvering targets with inverse synthetic aperture ladar (ISAL), dispersion and Doppler frequency time-variation exist in the range and cross-range echo signal, respectively. To solve this problem, an ISAL imaging algorithm based on integral cubic phase function-fractional Fourier transform (ICPF-FRFT) is proposed in this paper. The accurate ISAL echo signal model is established for a space maneuvering target that quickly approximates the uniform acceleration motion. On this basis, the chirp rate of the echo signal is quickly estimated by using the ICPF algorithm, which uses the non-uniform fast Fourier transform (NUFFT) method for fast calculations. At the best rotation angle, the range compression is realized by FRFT and the range dispersion is eliminated. After motion compensation, separation imaging of strong and weak scattering points is realized by using ICPF-FRFT and CLEAN technique and the azimuth defocusing problem is solved. The effectiveness of the proposed method is verified by a simulation experiment of an aircraft scattering point model and real data.

Ultrasound Endoscopic Imaging Algorithm Based on Linear Constraint Minimum Variance Criterion and Synthetic Aperture Sequential Beamforming

2020 ◽  
Vol 47 (8) ◽  
pp. 0804005
Author(s):  
田晓东 Tian Xiaodong ◽  
汪毅 Wang Yi ◽  
杨晋 Yang Jin ◽  
金浩 Jin Hao ◽  
蔡怀宇 Cai Huaiyu ◽  
...  
Keyword(s):  
Linear Constraint ◽  
Minimum Variance ◽  
Synthetic Aperture ◽  
Endoscopic Imaging ◽  
Imaging Algorithm ◽  
Variance Criterion

Fast 3D imaging algorithm for high-speed spinning targets based on GRT-CLEAN

2018 ◽  
Vol 33 (3) ◽  
pp. 228-238
Author(s):  
王 会 WANG Hui ◽  
巨 欢 JU Huan ◽  
方 阳 FANG Yang ◽  
李荣旭 LI Rong-xu ◽  
王保平 WANG Bao-ping
Keyword(s):  
High Speed ◽  
3D Imaging ◽  
Imaging Algorithm ◽  
Spinning Targets
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