ABSTRACT
Olfaction is a long-distance sense and is used widely in the animal kingdom for performing many basic tasks such as finding food, marking paths, and so on. An artificial olfaction system could possibly replace canines in various search and rescue operations. The problem of odor source localization has received attention recently due to its potential applications in areas such as detection of sources of toxic gas leaks [1,2], fire-origins of forest fires [3], leak point determination in pressurized systems [4], chemical discharge in water bodies [5], and detection of mines and explosives [6]. From the point of view of security, an artificial olfaction system would be handy in detecting explosives, locating harmful gas leaks, and so on.
