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Chin. Opt. Lett.
 Home  List of Issues    Issue 06 , Vol. 09 , 2011    10.3788/COL201109.061201

Modified adaptive algebraic tomographic reconstruction of gas distribution from incomplete projection by a two-wavelength absorption scheme
Ning Li, Chunsheng Weng (翁春生)
State Key Laboratory of Transient Physics, [Nanjing University of Science and Technology], Nanjing 210094, China

Chin. Opt. Lett., 2011, 09(06): pp.061201

Topic:Instrumentation, measurement, and metrology
Keywords(OCIS Code): 120.0120  110.0110  300.0300  

A modified adaptive algebraic reconstruction technique (MAART) with an auto-adjustment relaxation parameter and smoothness regularization is developed to reveal the tomographic reconstruction of H2O distribution in combustion from incomplete projections. Determinations of relaxation parameter and regularization factor are discussed with regard to the consideration of improvement in reconstruction and reduction of computational burden. A two-wavelength scheme from tunable diode laser absorption measurement, 7444.36 and 7185.59 cm ?1, is used to simplify the nonlinear solution problem for obtaining the tomographic distributions of concentration and temperature simultaneously. Results of calculations demonstrate that MAART can perform the reconstruction results more efficiently with little complex modification and much lower iterations as compared with the traditional algebraic reconstruction technique (ART) or simultaneous iterative reconstruction technique (SIRT) methods. The stability of the algorithm is studied by reconstruction from projections with random noise at different levels to demonstrate the dependence of reconstruction results on precise line-of-sight measurements.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Posted online:2011/4/29

Get Citation: Ning Li, Chunsheng Weng (翁春生), "Modified adaptive algebraic tomographic reconstruction of gas distribution from incomplete projection by a two-wavelength absorption scheme," Chin. Opt. Lett. 09(06), 061201(2011)

Note: This work was supported by the Young Scientists Fund of the National Natural Science Foundation of China (No. 11002074), the Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 20093219110037), the China Postdoctoral Science Foundation (No. 20100481147), the Jiangsu Planned Projects for Postdoctoral Research Funds (No. 0902094C), and the Nanjing University of Science and Technology Research Funding (No. 2010ZYTS092).


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