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The Scientific World Journal
Volume 2014, Article ID 215104, 9 pages
http://dx.doi.org/10.1155/2014/215104
Research Article

Identifiability and Identification of Trace Continuous Pollutant Source

1College of Information Engineering, North China University of Technology, Beijing 100144, China
2China School of Aviation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
3China Aero-Polytechnology Establishment, Beijing 100028, China

Received 11 February 2014; Accepted 4 April 2014; Published 27 April 2014

Academic Editor: Zhenxue Dai

Copyright © 2014 Hongquan Qu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Accidental pollution events often threaten people’s health and lives, and a pollutant source is very necessary so that prompt remedial actions can be taken. In this paper, a trace continuous pollutant source identification method is developed to identify a sudden continuous emission pollutant source in an enclosed space. The location probability model is set up firstly, and then the identification method is realized by searching a global optimal objective value of the location probability. In order to discuss the identifiability performance of the presented method, a conception of a synergy degree of velocity fields is presented in order to quantitatively analyze the impact of velocity field on the identification performance. Based on this conception, some simulation cases were conducted. The application conditions of this method are obtained according to the simulation studies. In order to verify the presented method, we designed an experiment and identified an unknown source appearing in the experimental space. The result showed that the method can identify a sudden trace continuous source when the studied situation satisfies the application conditions.