Digital photogrammetry system combined with laser tracking technology, and combined measured target

Abstract

The invention discloses a combined measured target and a digital photogrammetry system which is capable of effectively alleviating an adverse effect on the accuracy of digital photogrammetry due to air disturbance and is combined with a laser tracking technology. The digital photogrammetry system adopts at least one laser tracking instrument which is respectively calibrated with relative positions with various digital photogrammetry instruments; a reflector tracked by the laser tracking instrument is fixed in a measured target dot array and establishes a determined relative position with at least one measured target in the measured target dot array; a target point marked by the measured target with the definite relative position with the reflector is a reference point of the digital photogrammetry of target points in the measured target dot array; and the coordinate values of the target points, which are obtained through the digital photogrammetry system, are all determined through the relative positions of the reference point and the laser tracking instrument. The combined measured target comprises a support body, a measured target and the reflector, wherein the measured target and the reflector are both arranged on the support body; and the determined relative location is established between the measured target and the reflector.

Description

technical field [0001] The invention relates to digital photogrammetry technology, in particular to a digital photogrammetry system combined with laser tracking technology and a composite measured target. Background technique [0002] In recent years, digital photogrammetry technology has been widely used in non-topographic surveying and industrial surveying because of its fast measurement speed. However, in large-scale and long-distance measurement occasions, the adverse effects of air disturbance on the accuracy of photogrammetry have not been well overcome. Specifically, when the measured target dot matrix (that is, composed of a plurality of target points marked by the measured target, and these measured targets are arranged according to the shape of the measured object) is wide and the distance from digital photography When the measuring instrument is far away, the air disturbance in the measuring environment will cause the measured coordinates of each target point in ...

AI Technical Summary

Problems solved by technology

Moreover, the influence of air disturbance on the accuracy of photogrammetry will only be considered when the object to be measured (such as large equipment, workpiece, etc.) is actually measured, and the measurement of the reference device cannot accurately reflect the air disturbance during the actual measurement

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