Surveying instrument and surveying method

Details Surveying instrument and surveying method Surveying instrument and surveying method

2011-03-08

2011-03-08

Alsomiri, Isam (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

Reexamination Certificate

active

07903235

ABSTRACT:
A surveying instrument and a surveying method for further minimizing a measurement error when the surveying instrument casts a light to a measuring object and receives the reflected light and measures a delay time or a distance. A reference pulse light r and a measurement pulse light o1are received as a received light signal by a light receiving section9, and a damping signal S3U is formed from the received light signals r, o1, and an amplification rate of a minute level signal in the proximity of a zero cross point Q0of the damping signal S3U is greatly amplified, and timing signals r′, o1′ are formed by using an amplified signal. Therefore, the measurement error can be minimized.

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