Method for measuring the ground speed of a vehicle by means of radar using reflection of electromagnetic waves from the driving surface
First Claim
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1. A method of measuring a speed of a vehicle relative to ground, which comprises:
- providing a radar device rigidly connected on a vehicle, said radar device being adapted to simultaneously measure a relative distance (Dm) and a relative speed (Vm) between the radar device and a target;
measuring the relative distance between the radar device and a reflection point on the ground;
simultaneously measuring a relative speed between the radar device and the ground; and
validating the speed measurement with the measured distance between the radar device and the reflection point on the ground.
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Abstract
A method for measuring the speed (V) of a vehicle (1) relative to the ground, of the type using the deviation in frequency associated with the Doppler effect between a transmitted wave (3) sent by radar (2) solidly connected to the vehicle and a reflected wave (4) reflected by the ground, characterized in that radar of the type allowing simultaneous measurement of the relative distance (D) and the relative speed (V) between the vehicle and the ground is used, and that the distance measurement is used to validate the speed measurement.
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4 Claims
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1. A method of measuring a speed of a vehicle relative to ground, which comprises:
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providing a radar device rigidly connected on a vehicle, said radar device being adapted to simultaneously measure a relative distance (Dm) and a relative speed (Vm) between the radar device and a target; measuring the relative distance between the radar device and a reflection point on the ground; simultaneously measuring a relative speed between the radar device and the ground; and validating the speed measurement with the measured distance between the radar device and the reflection point on the ground. - View Dependent Claims (2, 3, 4)
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Specification