Target image control point layout system for aerial surveying and mapping of unmanned aerial vehicle

Abstract

A target image control point laying system for aerial surveying and mapping of an unmanned aerial vehicle comprises the unmanned aerial vehicle, a target air-drop device and a net-shaped target are arranged on the unmanned aerial vehicle, the net-shaped target comprises a grid body and falling fixing bodies, the grid body forms a plane calibration object with alternate colors, a plurality of falling fixing bodies are arranged on the outer edge of the grid body at equal intervals, and the falling fixing bodies are arranged on the outer edge of the grid body. The falling fixing body comprises a connecting piece, viscous cement covering the connecting piece and a protective film covering the viscous cement; the target air-drop device comprises a launching mechanism and a plurality of launching tubes corresponding to the falling fixing bodies in number, the launching tubes are arranged on the periphery of the grid body and comprise first through holes matched with the falling fixing bodies in outline, and one end of each first through hole is communicated with the launching mechanism. The target is loaded through the unmanned aerial vehicle, complex terrains can be overcome, manual field target setting is replaced, and the field distress risk is avoided. The targets are accurately distributed in batches through the unmanned aerial vehicle cluster technology and the satellite positioning technology, and the working efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of aerial surveying by unmanned aerial vehicle, in particular to a target image control point layout system for aerial photographic surveying and mapping by unmanned aerial vehicle. Background technique [0002] UAVs are widely used in aerial photography and mapping projects due to their advantages of light weight, convenient take-off and landing, flexible operation, low flight cost, and the ability to quickly and efficiently obtain high-resolution image data of the survey area. Based on pos-assisted aerial triangulation technology, it provides more accurate outer orientation elements at the moment of image exposure, which greatly improves the accuracy of aerial triangulation. However, since the UAV is equipped with a non-measurement camera, the image distortion is relatively large, coupled with the UAV's own poor wind resistance and unstable image attitude, image control point measurement has become a neces...

AI Technical Summary

Problems solved by technology

However, since the UAV is equipped with a non-measurement camera, the image distortion is relatively large, coupled with the UAV's own poor wind resistance and unstable image attitude, image control point measurement has become a necessary part of UAV aerial survey

[0003] However, in the face of complex terrain and landform restrictions in the field, such as mountainous areas and steep slopes, it is not only inefficient to deploy image control points through manual field work, but also poses personal dangers in some inaccessible places.

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