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P. Heide (1999)
COMMERCIAL MICROWAVE SENSOR TECHNOLOGY : AN EMERGING BUSINESSMicrowave Journal, 42
J Lewiner, E Carreel
Method and apparatus for measuring the speed of a moving body
J. Nelder, R. Mead (1965)
A Simplex Method for Function MinimizationComput. J., 7
L. Eriksson, S. Broden (1996)
High performance automotive radarMicrowave Journal, 39
On-board absolute speed sensors would be very useful in automotive applications in order to perform the measurement of the speed independently of the wheel rotation. Narrow beam Doppler sensors give a good accuracy but only operate if there is a reflecting obstacle in the antenna footprint on the road. Broad beam Doppler sensors have the advantage of offering a higher probability of getting a reflected wave, but they require multiple frequencies. A novel sensor is presented. It uses a single frequency emission, which leads to low cost devices. Simulations and measurements have been carried out which show that it is particularly well adapted to high-risk situations, for instance icy or very wet road surfaces, when only a few reflecting obstacles are present. In such situations, the accuracy of the measurement is typically of the order of 0.5 per cent.
Sensor Review – Emerald Publishing
Published: Mar 1, 2001
Keywords: Automotive
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