Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1986-02-06
1988-01-05
Buczinski, Stephen C.
Optics: measuring and testing
Range or remote distance finding
With photodetection
33291, 248146, 248182, 248DIG10, 356 1, 356 3, 356149, 356152, G01C 308, G01C 110, A47G 2302, F16M 1114
Patent
active
047172517
ABSTRACT:
A surveying instrument and procedure are provided for the precise determination of elevation differences in the course of a surveying traverse. The instrument comprises an optical wedge 13 situated on the horizontal longitudinal line of sight axis 27 of the primary optical system between the objective lens 11 and a target under observation. The wedge is arranged for rotation about this axis and with such rotation angularly displaces the diverted line of sight 28 from the horizontal to the plane of the target. The degree of rotation required of the wedge to acquire the target 33 is measured by electro-optical angle encoder means 10, and the distance to the target by EDM means 24, 26. The difference in elevation is calculated trigonometrically by computer means utilizing as data the wedge diversion angle, the sine function of its rotation, the computed angular displacement of the line of sight, and the distance to the target. The procedure further includes the cooperative employment of two such instruments 20, 30 each as the target for the other, to thereby increase the accuracy of measurement through the averaging of the combined results. Also included in the instrument is a mislevel compensation system 60 which provides both optical and electronic correction in the event of mechanical deviations in the orientation of the instrument.
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Hauschild Werner
Mimmack William E.
Wells Leon W.
Buczinski Stephen C.
Cubic Corporation
Wallace Linda J.
White Lionel N.
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