Levelling and calibrating method used for indoor space surveying and positioning system

Abstract

The invention discloses a levelling and calibrating method used for an indoor space surveying and positioning system. The levelling and calibrating method comprises the following steps: rigidly connecting an inclinometer with a base; fixing a launch station at the top end of the base; fixing a laser at the top end of the launch station; supplying power by the launch station to drive the laser at the top end to emit visible laser to the outside, thus forming a scanning plane and guaranteeing that all points on the scanning plane are positioned inside a view field of a theodolite; reading the coordinate value in the Z-axis direction by utilizing three points which are aligned by the theodolite and are separated by 120 degrees; calculating the differences of three average values until any two difference value is smaller than 0.1mm, otherwise, adjusting the height of a support leg corresponding to the triangular base; and setting the output angle values of the two axes of the theodolite to be zero, and taking the output angle values as the levelling criterion of the launch station. According to the levelling and calibrating method, the calibration process of external parameters is simplified, and the applicability of the system is improved; a rotating shaft of the launch station is taken as the criterion of a geodetic coordinate system, and further, the position and posture relationship with other measuring instruments is established, so that the combined use of various instruments is convenient.

Description

technical field [0001] The invention relates to the field of three-dimensional coordinate precision measurement based on an indoor space measurement and positioning system (wMPS, workshopMeasurementPositioningSystem), in particular to a leveling and calibration method for an indoor space measurement and positioning system. Background technique [0002] The indoor space measurement and positioning system is a large-scale spatial coordinate networked high-precision automatic measurement system developed based on the principle of photoelectric scanning and angle intersection to meet the measurement requirements of large-scale manufacturing industries (such as aerospace and shipbuilding). The system draws on the measurement idea of ​​the global positioning system, uses multiple laser emitting devices (transmitting stations) to form a measurement network, locates a single receiver, and obtains the three-dimensional coordinates of the point where the receiver is located. The launc...

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Problems solved by technology

[0004] However, on the one hand, in a complex environment, due to uncertainties such as space constraints and environmental interference, the measurement site cannot meet the calibration space requirements; on the other hand, for multiple base station network calibration, the calibration method is not efficient , thus affecting the use of the measurement and positioning system

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