TRAVEL DISTANCE MEASUREMENT DEVICE

摘要

A travel distance measurement device is provided with: a transmission antenna (102a) for projecting a transmission signal as a radio wave at the ground, and positioned on a vehicle; a receiving antenna (102b) for receiving a radio wave reflected by the ground and obtaining a reflected signal, and positioned near the transmission antenna (102a); a distance calculation means (IQ demodulator (104) and phase shift integrator (105)) for calculating the travel distance of a vehicle on the basis of the obtained reflected signal; a gyrosensor (106) for measuring a prescribed parameter pertaining to travel of the vehicle along a curve; and a correction calculator (107) for correcting the calculated travel distance on the basis of the measured parameter.