CALIBRATION OF EDM'S FOR PRECISION MEASUREMENT
The calibration of a HP 3800B distance meter yields two kinds of data. The first is the instrument-reflector constant which must be applied to each measurement. The second is the nonlinear sinusoidal error curve, which repeats itself each 10 m and which must be accounted for in order to maintain high precision for short lines. Application of the results to a small quadrilateral observed in order to monitor fault slippage yields a standard error of plus or minus 0.0007 m after adjustment. The average length of the sides is 180 m. The standard error of the measurements is about 4 ppm of the average length of the sides. /Author/
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Corporate Authors:
American Congress on Surveying and Mapping
Woodward Building, Room 430, 733 15th Street, N W
Washington, DC United States 20005 -
Authors:
- Moffitt, F H
- Publication Date: 1975-6
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 147-154
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Serial:
- Surveying and Mapping
- Volume: 35
- Issue Number: 2
- Publisher: American Congress on Surveying and Mapping
Subject/Index Terms
- TRT Terms: Calibration; Distance measuring equipment; Errors; Faults; Measurement; Measuring instruments
- Uncontrolled Terms: Slippage
- Old TRIS Terms: Fault zones
- Subject Areas: Design; Highways;
Filing Info
- Accession Number: 00125393
- Record Type: Publication
- Files: TRIS
- Created Date: Oct 18 1975 12:00AM