Showing papers by "Shoji Otaka published in 2018"

Distance measuring device and distance measurement method

Abstract: PROBLEM TO BE SOLVED: To enable accurate distance calculation to be performed adopting communication type distance measurement that finds the distance between two devices by communication between each device.SOLUTION: A distance measuring device of an embodiment includes a calculation unit for calculating the distance between a first device and a second device at least one of which is movable, on the basis of phase information obtained by the first device and the second device, the first device including a first transmitter-receiver for transmitting three or more first carrier signals using the output of a first reference signal source and receiving three or more second carrier signals, the second device including a second transmitter-receiver for transmitting three or more second carrier signals using the output of a second reference signal source and receiving the three or more first carrier signals, the calculation unit calculating the distance on the basis of the phase detection result obtained by reception of the first and second carrier signals, and correcting the calculated distance on the basis of information pertaining to the amplitude ratio of one of the first carrier signals to the other that have been received by the second transmitter-receiver.SELECTED DRAWING: Figure 1