A quick and high-precision positioning method for shielding an object inside a region

By determining known coordinate points A and B within the obstructed area, and using a rangefinder and calculation formulas to calculate the high-precision coordinates of the target object within the obstructed area, the problem of slow coordinate measurement speed and low accuracy within the obstructed area is solved, achieving a fast and high-precision positioning effect.

CN117706570BActive Publication Date: 2026-07-21SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
Filing Date
2023-12-13
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In deep foundation pit engineering, the inability to receive satellite signals in the obstructed area makes it impossible to obtain coordinates using conventional coordinate measurement methods. Furthermore, total stations are slow to measure and are easily affected by shaking, leading to extended measurement time and increased errors.

Method used

By determining two known coordinate points A and B within the obstructed area, a distance measuring instrument is used to measure the distance between the point to be measured and the known coordinate points. Combined with the high-precision local coordinates of the known coordinate points, a proprietary calculation formula is used to calculate the high-precision local coordinates of the point to be measured.

Benefits of technology

It enables rapid and high-precision positioning of targets within obstructed areas, shortens measurement time, reduces costs, and is particularly suitable for on-site measurements with tight deadlines.

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Abstract

The application discloses a kind of quick high-precision positioning method for shielding target inside area, comprising determining the distribution range of the point to be measured located in shielding area;Determine and obtain the high-precision local coordinates of known coordinate points A and B;Fix range finder on known coordinate point A, install reflector sheet vertically on telescopic rod with horizontal bubble, and place telescopic rod directly above the point to be measured;Adjust telescopic rod to make reflection point be in the center of reflector sheet, measure the distance r ia And r ib Of each point to be measured and known coordinate points A and B in turn ia And r ib Of all measuring points are derived;For each point to be measured, the local coordinates of the point to be measured are calculated according to the formula combined with known coordinate points A and B.The application has the advantages of fast speed and high precision, compared with conventional measurement method, the measurement time is short, the cost is low, especially suitable for high-precision coordinate positioning of point to be measured or obtaining relative position relationship of point to be measured under the condition that construction period is tight and on-site measurement time is severely limited.
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