| 摘要 |
PROBLEM TO BE SOLVED: To easily determine the collimating direction of a tracking measuring unit and recover the automatic tracking when the tracking measuring unit in an automatic tracking measuring system is disabled for automatic tracking as it cannot collimate a tracking target. SOLUTION: Visible laser beam emitters 32a, 32b are provided for tracking measuring units 31a, 31b in an automatic tracking measuring system. When the tracking measuring units 31a, 31b cannot collimate tracking targets 30a, 30b, other positions out of light receiving parts 33a, 33b of the tracking targets are irradiated with visible laser beams, and hence it can be found by naked eyes that the tracking measuring units 31a, 31b are disabled for automatic tracking. In this event, a remote controller remotely controls servo motors of the tracking measuring units 31a, 31b to correct the collimating directions of the tracking measuring units 31a, 31b so as to irradiate the receiving parts 33a, 33b of with the visible laser beams.
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