Optimization of Irregular Beam Distribution for Two-Dimensional Temperature Reconstruction

Junling, 宋俊玲 Song; Yanji, 洪延姬 Hong; Guangyu, 王广宇 Wang

doi:10.3788/aos201333.0430001

光学学报

2013

DOI: 10.3788/aos201333.0430001

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Optimization of Irregular Beam Distribution for Two-Dimensional Temperature Reconstruction

宋俊玲 Song Junling¹,

洪延姬 Hong Yanji²,

王广宇 Wang Guangyu³

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2023

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Optimization of beam arrangement for tunable diode laser absorption tomography reconstruction based on fractional Tikhonov regularization

Pang¹,

Li²,

Huang³

et al. 2023

Acta Phys. Sin.

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Beam arrangement with limited projections based on tunable diode laser absorption spectroscopy is the key to achieving a more accurate two-dimensional reconstruction of the combustion field. Using fractional calculus theory, a beam optimization method based on fractional Tikhonov regularization is proposed. The beam arrangement function based on fractional Tikhonov regularization is established by extending the standard Tikhonov regularization to fractional modes. The optimal beam arrangement is chosen by using genetic algorithm for different orders in the range of (0,1). Using 20 laser beams scanning the characteristic absorption spectrum of H<sub>2</sub>O in the near-infrared band 7185.6 cm<sup>-1</sup>, and modeling calculations in a 10×10 element discrete tomography domain. Comparing the reconstruction results of the five beam arrangements for different Gaussian distribution models, the beam arrangement based on fractional Tikhonov regularization shows more obvious advantages. This proposed design method will be valuable for the theoretical study of the optimal design of two-dimensional measurement beams based on the tunable diode laser absorption spectroscopy technique, which can promote the application of this technique in the two-dimensional reconstruction of complex engine combustion fields and combustion efficiency improvement.

show abstract

Optimization of beam arrangement for tunable diode laser absorption tomography reconstruction based on fractional Tikhonov regularization

Pang¹,

Li²,

Huang³

et al. 2023

Acta Phys. Sin.

View full text Add to dashboard Cite

show abstract

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Optimization of Irregular Beam Distribution for Two-Dimensional Temperature Reconstruction

Cited by 1 publication

References 0 publications

Optimization of beam arrangement for tunable diode laser absorption tomography reconstruction based on fractional Tikhonov regularization

Optimization of beam arrangement for tunable diode laser absorption tomography reconstruction based on fractional Tikhonov regularization

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