VEHICLE SPEED MEASUREMENT APPARATUS AND VEHICLE SPEED MEASUREMENT METHOD

摘要

PROBLEM TO BE SOLVED: To measure a speed of a vehicle more accurately without depending on equipment on a road.SOLUTION: A vehicle speed measurement apparatus includes: first speed detection units 21, 210 for detecting an estimated speed Vof a vehicle 1, on the basis of a rotation speed of a driving system 14 mounted on the vehicle; second speed detection units 22, 220 which transmit an electromagnetic wave or a sound wave from the vehicle 1 toward a plurality of objects A, B, C..., receive the electromagnetic wave or the sound wave reflected by the objects A, B, C..., and detect relative speeds V, V, V... of the vehicle 1 with respect to each of the objects; and an actual speed calculation unit 240 which calculates an actual speed Vof the vehicle 1, on the basis of the estimated speed Vand the relative speeds V, V, V.... The actual speed calculation unit 240 calculates the actual speed Vby use of the plurality of relative speeds which fall within a predetermined range, out of the relative speeds V, V, V..., from the estimated speed V.