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We address the problem of estimating the distance to a gas source using concentration measurements.

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We address the problem of estimating the distance to a gas source using concentration measurements.

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  1. Indicators of Gas Source Proximity using Metal Oxide Sensors in a Turbulent EnvironmentAchim J. Lilienthal*, Tom Duckett*, Hiroshi Ishida**, Felix Werner*** * Örebro University – Dept. of Technology, AASS – Örebro (Sweden)** Tokyo Univ. of Agriculture & Technology – Dept. of Mech. Systems Eng. – Tokyo (Japan)** University of Tübingen - Wilhelm-Schickard Institute - Tübingen (Germany) • We address the problem of estimating the distance to a gas source using concentration measurements. • The difficulty in a real-world environment is that the gas distribution is turbulent, i.e. the concentration field does not have smooth gradients. • Previous experiments showed that gas sensor readings recorded during a rotation maneouvre can be discriminated according to the distance from the gas source using machine learning techniques. • We investigate possible indicators of gas source proximity in the learned models. A correlation analysis showed that the response variance was a better indicator than the average response.

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