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Citation: ZHANG Lin, ZHU Shun-Guan, FENG Hong-Yan, WANG Jun-De. Interpretation of Passive Remote Sensing FTIR Spectra Based on Interferogram[J]. Chinese Journal of Applied Chemistry, ;2009, 26(4): 467-470. shu

Interpretation of Passive Remote Sensing FTIR Spectra Based on Interferogram

1.
School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094

Corresponding author: ZHANG Lin,
Received Date: 24 March 2008
Available Online: 30 June 2008

In view of background interference and weak signals in practice,a method for analyzing passive remote sensing FTIR signals with interferogram was built based on different attenuation rates of background and sample interferogram.With a bandwidth of FIR filter of 20 cm^-1,the signal of benzene was acquired from the passive remote sensing FTIR interferogram while parameters were optimized as follows:interferogram length was 100 points,and the start point of interferogram was 50 points apart from the centerburst.Then PLS was utilized to build a calibration model and recognize 26 unknown samples with a recognition rate of 96%.The work indicates that the responses of passive remote sensing FTIR were intensified and the background effect was avoided with this technique.Combination of this technique with chemometric method makes if possible to monitor the environmental pollution automatically.
- passive remote sensing FTIR,
- interferogram,
- digital filter,
- PLS
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