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A double-laser diode onboard sensor for velocity measurements

Abstract : In this paper, we validate the feasibility of an onboard velocity sensor using the self-mixing effect. Roughness of the target surface, wet target surface, noncontrolled changes of incident angle, and speed vector vertical components have been considered during this development. A first prototype has been designed with an automotive application so to illustrate this feasibility. This low-cost and low-clutter prototype presents an interesting basic performance (/spl sigma//spl ap/0.22%). In order to improve the accuracy as well as the robustness of the system, a double-laser diode sensor has then been tested successfully (/spl sigma//spl ap/0.038%) by removing the influence of the pitching and the pumping effects.
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Submitted on : Friday, March 31, 2006 - 11:22:56 AM
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X. Raoul, T. Bosch, G. Plantier, Noël Servagent. A double-laser diode onboard sensor for velocity measurements. IEEE Transactions on Instrumentation and Measurement, Institute of Electrical and Electronics Engineers, 2004, 53, pp.95-101. ⟨10.1109/TIM.2003.821483⟩. ⟨in2p3-00025874⟩



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