A measurement device includes: a memory; and a processor coupled to the memory and configured to: generate a drive signal with a sine wave, according to a clock signal; control a reflection direction of output light of a light emitting device, by utilizing a resonance frequency, according to the drive signal; control a timing at which the drive signal is generated; and add or remove a pulse of a reference clock signal configured to generate the clock signal, according to a phase difference between a desired control signal and the control signal.