Patent ID: 11914021
Assignee: ALOUETTE TECHNOLOGY INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A velocity measurement device, comprising:
a transmitting means that transmits a transmission signal by a transmitting antenna toward a measurement object;
a receiving means that receives a reflected wave from the measurement object with a plurality of receiving antennas and generates a reception signal for each of the receiving antennas; and
a signal processing means that obtains a phase plane of the reflected wave with respect to an antenna plane of the plurality of receiving antennas from a phase difference between the reception signals to specify an arrival direction of the reflected wave, obtains a distance to the measurement object from a propagation delay time of the reflected wave, and calculates a phase fluctuation of the reflected wave to calculate a velocity of the measurement object from the phase fluctuation, wherein
the velocity measurement device measures a velocity of a vehicle running on a road as the velocity of the measurement object.