High-accuracy vertical axis inclination angle measurement system and calibration method thereof

Abstract

The invention provides a high-accuracy vertical axis inclination angle measurement system and a calibration method thereof. The high-accuracy vertical axis inclination angle measurement system comprises a vehicle-mounted platform, a photoelectric theodolite, a television auto-collimator and a plane reflecting device, wherein the photoelectric theodolite is fixedly arranged on the vehicle-mounted platform and carries a first imaging device; the television auto-collimator carries a second imaging device; the plane reflecting device is positioned right below the television auto-collimator and is fixed relative to the ground; the television auto-collimator is vertically fixed below a base of the photoelectric theodolite. The calibration method comprises the following steps: coarsely leveling the photoelectric theodolite; starting the television auto-collimator; arranging a collimator which is horizontally placed at the same horizontal position of the photoelectric theodolite; inclining the vehicle-mounted platform; rotating an azimuth axis of the photoelectric theodolite; and re-inclining the vehicle-mounted platform. By virtue of the high-accuracy vertical axis inclination angle measurement system and the calibration method thereof, the system structure is simplified, and the efficiency of vertical axis inclination angle measurement is improved.

Description

technical field [0001] The invention relates to a vertical axis inclination measurement system and a calibration method thereof, which are particularly suitable for vertical axis inclination measurement in a non-landing working mode. Background technique [0002] The vertical axis inclination measurement is mainly used for the non-ground measurement technology of the photoelectric theodolite. The vertical axis inclination directly affects the measurement accuracy of the photoelectric theodolite to the target. The conventional photoelectric theodolite adopts the landing mode. The current leveling method can make the vertical axis error of the theodolite adjusted to below 3 ", and the comprehensive measurement error of the theodolite can reach below 10 ". When the non-landing working mode is used, the theodolite always has a large vertical axis error due to the rigidity and clearance of the car body support mechanism, and the error will continue to change with external disturb...

AI Technical Summary

Problems solved by technology

However, before the start of the measurement work, it is necessary to adjust the level and the orthogonality of the autocollimator. The advantage of this method is that the results are true and accurate. The disadvantage is that the measurement preparation time is too long, which is not conducive to the rapid deployment and mobile measurement of the measurement system in engineering. requirements

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