RECEPTION TIME ESTIMATION DEVICE

摘要

Provided is a reception time estimation device (20) that estimates the time at which reception of a wave transmitted with a predetermined length of time serving as one transmission opportunity began as an estimated reception time. The reception time estimation device is provided with: a first acquisition unit for acquiring a first time that is a time at which the wave peak value of a received wave exceeded a first threshold value; a second acquisition unit for acquiring a second wave peak value and a second time that is associated with the second wave peak value, said second wave peak value being the wave peak value of the wave at a predetermined timing after the first time and within a period in which the wave peak value of the wave increases and reaches a peak value; and a reception time estimation unit that, on the basis of the first threshold value, the second wave peak value, the first time, and the second time, calculates the time at which the wave peak value of the wave changes from zero as an estimated reception time.