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Position estimation of lap joints for seam tracking applications at mm-wave frequencies

Published online by Cambridge University Press:  23 April 2013

Jochen O. Schrattenecker ,
Andreas Haderer ,
Günther Reinthaler  and
Andreas Stelzer
Jochen O. Schrattenecker*
Affiliation:
Institute for Communications Engineering and RF-Systems, Altenberger Str. 69, A-4040 Linz, Austria. Phone : +43 732 2468 6390
Andreas Haderer
Affiliation:
Institute for Communications Engineering and RF-Systems, Altenberger Str. 69, A-4040 Linz, Austria. Phone : +43 732 2468 6390
Günther Reinthaler
Affiliation:
Fronius International GmbH, Günter Fronius Str. 1, A-4600 Wels-Thalheim, Austria
Andreas Stelzer
Affiliation:
Institute for Communications Engineering and RF-Systems, Altenberger Str. 69, A-4040 Linz, Austria. Phone : +43 732 2468 6390
*
Corresponding author: J. Schrattenecker Email: [email protected]
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Abstract

In this paper, we present the results of using a frequency-stepped continuous-wave radar system to estimate the position of overlapping and electrically good conductive plates. We especially focus on polarimetric scattering effects caused by the step of a lap joint, which is a common welding-geometry. To model the step's contribution to the overall scattered signal, we use a two-dimensional combined field integral equation (CFIE) approach. For demonstrating its practical applicability, the implemented scattering model is verified by measurements. To emphasize the improvements of position estimation by using a CFIE approach, the outcomes of the model are compared to a commonly used point scattering model. Finally, the numerical signal is utilized to precisely estimate the position of the lap joint.

Keywords

Microwave mesurementsRadar applications
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 5 , Special Issue 3: European Microwave Week 2012 , June 2013 , pp. 409 - 417
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2013 

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References

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