Abstract
We have constructed a large scale laser radar system.
There are two types of systematic errors which occur in the measurement of wide area by using the system. Those are about measured signal intensity and the aiming error. The problem of the signal intensity was solved by using a gain switching circuit which changes the gain of the photomulttiplier and by adopting the dynamic range increasing methods. The aiming error. which is caused by the curvature of the earth and the refractive index of the air, are estimated numerically.
From the calculation of S/N, this system was proved to be working as had been designed.
