基于二次最优阈值近似消息传递法的蒸发波导去噪重构

doi:10.11959/j.issn.1000-436x.2019200

Abstract

Abstract:

To solve the problem that the mixed noise of compressed sensing observation stage had adverse effects on the high-precision reconstruction in the time-space situation awareness process of evaporative duct,an approximate message passing method based on quadratic optimal threshold was proposed.A quadratic stabilization threshold function which integrated advantages of soft and hard threshold functions was designed,and the optimal threshold setting policy was added to the iterative process based on conjugate gradient method to speed up convergence.Theoretical analysis and experiments show that,compared with several mainstream algorithms,the proposed algorithm has the faster convergence rate and lower denoising reconstruction error.

Key words: compressed sensing, evaporation duct, denoising and reconstruction, approximate message passing

CLC Number:

TN911.73

Guosheng RUI, Ge LIU, Wenbiao TIAN, Daoguang DONG, Yanan ZHANG. Denoising and reconstruction of evaporation duct based on quadratic optimal threshold approximation message passing method[J]. Journal on Communications, 2019, 40(10): 10-19.

Figures/Tables 10

重构算法	重构时间/s
重构算法	$\frac{K}{N} = 0.01$	$\frac{K}{N} = 0.03$	$\frac{K}{N} = 0.05$	$\frac{K}{N} = 0.07$	$\frac{K}{N} = 0.09$	$\frac{K}{N} = 0.11$	$\frac{K}{N} = 0.13$	$\frac{K}{N} = 0.15$	$\frac{K}{N} = 0.17$	$\frac{K}{N} = 0.19$
QOT-AMP	0.072 0	0.093 0	0.187 0	0.265 0	0.343 0	0.406 0	0.483 0	0.578 0	0.795 0	1.045 0
OMP	0.063 0	0.093 0	0.165 0	0.749 0	2.496 0	10.347 0	10.800 0	15.124 0	17.374 0	17.171 0
CoSaMP	0.062 0	0.083 0	0.098 0	0.094 0	0.152 0	0.173 0	0.196 0	0.214 0	0.295 0	0.365 0
SP	0.025 0	0.046 0	0.063 0	0.062 0	0.094 0	0.078 0	0.125 0	0.156 0	0.140 0	0.203 0
soft-AMP	0.064 0	0.063 0	0.074 0	0.0780	0.078 0	0.093 0	0.104 0	0.107 0	0.155 0	0.198 0
NLM-AMP	6.023 0	6.186 0	6.254 0	6.357 0	6.324 0	6.410 0	6.395 0	6.819 0	6.795 0	6.802 0
AMP-UD	30.524 0	30.858 0	31.325 0	31.562 0	31.862 0	31.765 0	32.001 0	32.158 0	32.456 0	32.682 0

References 23

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Denoising and reconstruction of evaporation duct based on quadratic optimal threshold approximation message passing method

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