Fig. 7
From: Laser link experiment with the Hayabusa2 laser altimeter for in-flight alignment measurement
Histogram of the ground pulse intervals shown as a stair-step plot. The histogram of the LIDAR’s two-pulse intervals is shown as a bar histogram. The clock frequency of the LIDAR counter is adjusted by about 2 kHz from the nominal frequency so that the two histograms overlap. The left and right vertical frequency tick marks refer to the ground station and the LIDAR respectively