Complex structure feature enhancement algorithm for high resolution SAR imaging

Bo HUANG; Jie ZHOU; Ge JIANG; Hai ZHANG

doi:10.11972/j.issn.1001-9014.2022.04.017

Journal of Infrared and Millimeter Waves, Volume. 41, Issue 4, 762(2022)

Complex structure feature enhancement algorithm for high resolution SAR imaging

Bo HUANG^*, Jie ZHOU, Ge JIANG, and Hai ZHANG

Author Affiliations

Institute of Electronic Engineering，Chinese Academy of Engineering Physics，Mianyang 621999，China

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Abstract Get PDF(in Chinese)

Figures & Tables(5)

Fig. 1. Comparison diagrams of simulation experiments（a）Reference，（b）defocusing noise，（c）Lasso，（d）TV-ADMM，（e）DTGV-ADMM，（f）CEA

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Fig. 2. Comparison diagrams of SAR measurements（a）RD，（b）Lasso，（c）TV-ADMM，（d）DTGV-ADMM，（e）CEA

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Fig. 3. Comparison diagrams of ISAR measurements（a）RD，（b）Defocusing noise，（c）Lasso，（d）DTGV-ADMM，（e）CEA

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Fig. 4. Experiments of phase transition analysis（a）under sampling（USL）-Signal to Noise Ratio（SNR），（b）sparsity（sp）-under sampling（USL）

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Table 1. [in Chinese]

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Table 1. [in Chinese]

步骤1对SAR回波数据进行预处理，距离徙动校正及相位误差补偿。

步骤2设定初值 $X^{0} = Z^{0} = D^{0} = 0$ ，G =2，k=0，设定迭代停止准则，开始循环。

步骤3进行对 $Z_{1}$ 、 $D_{1}$ 、 $Z_{2}$ 和 $D_{2}$ 的顺次更新运算：

for g=G

$Z_{1}^{k + 1} = (E_{}^{k + 1})^{H} A^{H} Y, D_{1}^{k + 1} = D_{1}^{k} - X_{}^{k + 1} + Z_{1}^{k + 1}$ ，式（12）-（13）

$Z_{2}^{k + 1} = p r o n_{λ_{2} / ρ} [W_{}^{k + 1}], D_{2}^{k + 1} = D_{2}^{k} - X_{}^{k + 1} + Z_{2}^{k + 1}$ ，式（15）-（16）

end

$Z_{}^{k + 1} = [Z_{1}^{k + 1} Z_{2}^{k + 1}], D_{}^{k + 1} = [D_{1}^{k + 1} D_{2}^{k + 1}]$

步骤4根据式（12）进行对 $X$ 的更新运算

$X_{}^{k + 1} = [A^{H} E^{H} Y + ρ_{1} (Z_{1}^{k} - D_{1}^{k}) + ρ_{2} (Z_{2}^{k} - D_{2}^{k})] \cdot (A^{H} {A + ρ G I)}^{- 1}$ 式（18）

步骤5若满足停止准则，则跳至步骤6，结束迭代。否则裂变量 $k = k + 1$ ，并跳至步骤2。

步骤6输出联合多特征增强图像数据 $X$ 。

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Bo HUANG, Jie ZHOU, Ge JIANG, Hai ZHANG. Complex structure feature enhancement algorithm for high resolution SAR imaging[J]. Journal of Infrared and Millimeter Waves, 2022, 41(4): 762

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Paper Information

Category: Research Articles

Received: Dec. 9, 2021

Accepted: --

Published Online: Dec. 13, 2022

The Author Email: Bo HUANG (vick123y@163.com)

DOI:10.11972/j.issn.1001-9014.2022.04.017

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology