[1] [1] Ping Cuo. Status and comprehensive control countermeasures of urban air pollution in China[J].Environmental Science and Management, 2006, 31(1): 18-21(in Chinese).

[2] [2] Wu Liang, Jiang Hua. Blind separation algorithm of single-channel mixed-signal[J].information and Electronic Engineering, 2012, 10(3): 343-349(in Chinese).

[3] [3] Pang Taotao, Yao Jianbin, Du Liming. Artificial neural networks for the identification of infrared spectra of ilex kudingcha[J].Spectroscopy and Spectral Analysis, 2007, 27(7): 1336-1339(in Chinese).

[4] [4] Rowe D M, Min G. Evakuation of thermoelectric modules for power generation[J].Journal of Power Sources, 1998, 73(2): 193-198.

[5] [5] China’s Environmental Protection Department. Emission limits and measurement methods for light duty vehicles (fifth in China): GB18352.5-2013[S/OL].[2013-09-17] http:// kjs. mep. gov. cn/ hjbhbz/bzwb/ dqhjbh/ dqydywrwpfbz/ 201309/ t20130917－260352.htm.

[6] [6] Sensors, Inc.NDUV NO MODULE Technical Manual[M]. Version 1.00, 2002: 4.

[7] [7] Common P. Independent component analysis, a new concept [J].Signal Processing, 1994, 3(3): 287-314.

[8] [8] Sun Shouyu.The Foundation and Application of Blind Signal Processing[M]. Beijing: National Defence Industry Press, 2010: 52-53(in Chinese).

[9] [9] China’s Environmental Protection Department. Emission limits and measurement methods for lightduty vehicles (fourth in China): GB18352.5-2005[S/OL].[2007-07-01](in Chinese).

[10] [10] AQSIQ and the National Standards Committee, Fifth stage vehicle gasoline national standard: GB17930-2013[S].[2013-12-18](in Chinese).

[11] [11] Chang Bingguo. Based on RBF neural network hybrid gas intelligent detection system[J].Journal of Hunan University: Natural Science Edition, 2009, 3(7): 82-84(in Chinese).

[12] [12] Yang Jun.Pretreatment and Fuzzy Neural Network Algorithm for the Recognition of Electronic Nose[D]. Dalian: Master’s Thesis of Dalian University of Technology, 2007(in Chinese).