Radar Automatic Inclination Calibration (AIC)
Radar Automatic Inclination Calibration (AIC)

Perfect for ETCS & CBTC speed measurement. Quick and simple to install – no need for delicate adjustments or costly running trials. Radar AIC includes the unique automatic calibration system. No need for precise adjustments of the radar mounting, for angle measurements, for running trials to verify angle. A simple calibration request and Radar AIC automatically calculates the exact angle ensuring accurate readings.

Unrivalled experience worldwide:

  • 20-years’ experience in Doppler
  • 5th-generation radar

Highest accuracy & availability for all trains and all track beds:

  • Ruggedized radome
  • EN50129, EN50128 assessment

Customer benefits:

  • Unique Automatic Inclination Calibration greatly reduces installation time and costs
  • Easy maintenance
  • Precision
Speed measurement accuracy

Frequently Asked Questions

The radar measures vehicle speed over ground by applying the Doppler-Fizeau effect. It emits a 24 GHz microwave that is reflected on the ground. The Doppler effect causes a frequency shift between the transmitted and the received waves, which is proportional to the speed and dependent upon the angle between the speed vector and the direction of the antenna’s radiation

Speed = λ.F / 2 cos θ

λ: wave length of the micro=wave signal

F: Doppler frequency

θ: Angle of incidence

In order to ensure a high accuracy of the measurement on train, the radar is equipped with a high-accuracy 3-D inclinometer. At the radar setup on the train, a calibration is initiated by the maintainer. Then, the radar AIC compensates the angles in order to have the true speed value.

The Radar AIC uses patch antenna technology and a genuine mathematic algorithm processed by a digital signal processor to improve the speed measurement on various types of ground. The Radar AIC has been specifically designed for ballast and smooth grounds, such as asphalt or concrete. This improved design ensures a high availability of the measurement even when the ground is humid.

Automatic Inclination Calibration

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ZI Bois de Plante - Rue Amélia Earhart
BP 43 - 37700 La Ville-aux-Dames - France

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