Original terrain air-ground integrated measurement method

Through the integrated air-ground method of UAV aerial survey and three-dimensional laser scanning technology, combined with multi-source data processing, the blind spots and insufficient accuracy of complex terrain areas are solved, and high-precision terrain measurement with high efficiency and full coverage is achieved.

CN120385319APending Publication Date: 2025-07-29SINOHYDRO BUREAU 5
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Patent Information

Application Number
CN202510650092.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-20
Publication Date
2025-07-29

AI Technical Summary

Technical Problem

Traditional terrain measurement methods have problems such as blind spots, insufficient accuracy, and low efficiency in complex terrain areas, making it difficult to achieve high-precision, high-efficiency, and full-coverage measurements.

Method used

The integrated air-ground method of UAV aerial measurement and three-dimensional laser scanning technology is adopted to obtain high-resolution images and POS positioning data through UAVs, and the blind spots are supplemented with a three-dimensional laser scanner to construct a multi-source data set, and a whole-domain data acquisition mode is formed through geometric correction, multi-station registration, feature fusion and other processing.

Benefits of technology

It realizes high-precision, high-efficiency and full-coverage measurement of complex terrain areas, solves the problems of incomplete coverage and insufficient accuracy in traditional methods, and improves the accuracy of terrain modeling and data acquisition efficiency.

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Abstract

The invention discloses an air-ground integrated measurement method for an original terrain, and relates to the technical field of engineering surveying, and the method comprises the steps: S1, carrying multi-sensor aerial survey by an unmanned aerial vehicle, obtaining an image and POS positioning data, scanning a blind area of the unmanned aerial vehicle by using a three-dimensional laser scanner, obtaining laser point cloud data, and carrying out the scanning of the laser point cloud data; constructing a multi-source data set including optical images, POS positioning data and laser point cloud, and forming an air-ground complementary data acquisition mode; s2, geometric correction and aerial triangulation encryption are carried out on the unmanned aerial vehicle image, denoising and multi-station registration are carried out on the laser point cloud data, and the data quality is improved; s3, unifying a multi-source data space reference through coordinate system unification, feature fusion and decision-level fusion, and realizing feature complementation; s4, constructing a digital elevation model and a digital surface model based on the fused data, and generating a topographic mapping map; the method breaks through the limitation of a single technology through air-ground technology complementation, and ensures the global data coverage of complex terrains.
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