Surveying instrument

Details Surveying instrument Surveying instrument

1979-08-30

1982-08-31

Buczinski, S. C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356152, G01C 308, G01B 1126

Patent

active

043469892

ABSTRACT:
A tacheometer includes a distance measuring module whose output indicates the distance to a target by a phase shift in an output signal relative to a reference signal. An angle measuring module has an output that indicates angular displacement by a phase shift in another output signal relative to a different reference signal. A single phase comparison module alternately measures both phase shifts.

REFERENCES:
patent: Re26252 (1967-08-01), Jones
patent: 4037161 (1977-07-01), Westell
M. L. Bullock et al., Hewlett-Packard Journal, vol. 27, No. 8, pp. 2-12, Apr. 1976.
Geodimeter 700 (Operating Manual), Publication 571.2010 AGA Geotronics AB. S-181-81 Lidingo, Sweden; 1977.

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