[Reconstruction algorithms of computed tomography of remote sensing FTIR].
Reconstruction algorithms of computed tomography-remote sensing fourier transform infrared spectroscopy plays a key role in fast and cost-effective acquirement of gas concentration distribution. Ideally, a reconstruction algorithm can be used to obtain good reconstruction maps only by limited number of measurements and non-symmetric ray configurations, even in the presence of instrument noise, measurement error, poor beam geometry, and variations in the contaminant spatial distribution. Several conventional reconstruction algorithms used to reconstruct two-dimensional concentration maps of the vapor contaminants by remote sensing FTIR, such as ART, MART, SIRT and SBFM, have been reviewed in this paper. Comparing to ART, MART has the advantages of iterative speed and iterative precision, while SIRT overcomes the problem of illegibility and SBFM can reduce the noise sharply.
Huang
Zhong-hua
ZH
Laboratory of Advanced Spectroscopy, Nanjing University of Science and Technology, Nanjing 210014, China.
Li
Yan
Y
Wang
Jun-de
JD
D000393:Air Pollutants / Q000032:analysis; D000465:Algorithms; D003198:Computer Simulation; D001330:Electronic Data Processing; D004784:Environmental Monitoring; D007091:Image Processing, Computer-Assisted; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods; D014054:Tomography
D000393:Air Pollutants