UAV Placement Table with Reflection Target for Surveying
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Solution Overview
Problem
Existing aerial photogrammetry techniques require costly and difficult-to-install orientation targets for high surveying accuracy, which increases costs and complexity, especially in challenging geographic features.
Innovation Solution
A placement table with a target display function is used for an unmanned aerial vehicle (UAV), incorporating a reflection target for laser positioning, allowing the UAV to determine its position relative to the table, which is then used to calculate three-dimensional data without the need for external orientation targets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple orientation targets are installed on the ground surface and their locations are measured in advance, then high surveying accuracy is achieved, but installation cost and complexity increase
Solution Approach 1:
The patent extracts the essential function of orientation targets (providing positioning reference) and transfers it to the UAV platform itself through the placement table. Instead of requiring multiple separate orientation targets on the ground, the system uses the UAV's own placement table as the reference, eliminating the need for complex ground-based target installation while maintaining positioning accuracy.
Solution Approach 2:
The placement table serves multiple functions: it acts as both the UAV's launch platform and the orientation reference target. This multi-functionality consolidates what were previously separate components (launch platform and orientation targets) into a single integrated system, reducing installation complexity while preserving surveying accuracy.
2Measurement precision
If multiple orientation targets are installed on the ground surface and their locations are measured in advance, then high surveying accuracy is achieved, but installation cost increases
Solution Approach 1:
The patent eliminates the need for multiple separate orientation targets by extracting their positioning function and integrating it into the UAV's placement table. This reduction in the quantity of required components directly lowers material costs and installation expenses while maintaining the necessary surveying accuracy through the unified placement table system.
Solution Approach 2:
The patent merges the functions of multiple orientation targets into a single placement table that is already present on the UAV. This consolidation reduces the total quantity of components needed, thereby reducing both material costs and installation expenses associated with deploying multiple separate orientation targets.
3Measurement precision
If orientation targets are installed on the ground, then high surveying accuracy is achieved, but installation becomes difficult in challenging geographic features
Solution Approach 1:
Instead of placing orientation targets on the ground (traditional approach), the patent inverts the approach by placing the orientation reference (placement table) on the UAV itself. This inversion eliminates the need to install targets on difficult-to-access ground surfaces, making the system adaptable to challenging geographic features while maintaining surveying accuracy.
Solution Approach 2:
The placement table on the UAV serves as both the launch platform and the orientation reference, eliminating the need for separate ground-based target installation. This multi-functionality makes the system universally applicable to various geographic conditions without requiring difficult ground installations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method reduces the cost and complexity of installing orientation targets while maintaining high surveying accuracy by using the placement table as a control point for calculating exterior and interior orientation parameters of the UAV's camera.
Implementation Method 1
an unmanned aerial vehicle may include a reflection target to be used in laser positioning
Implementation Method 2
a reflection target to be used in laser positioning
Data Source
AI summary
[Problem] To obtain high measurement accuracy in aerial photogrammetry while reducing the cost of installing a measurement target. [Solution] According to the present invention, a launching pad for an unmanned aircraft on which a UAV 200 is installed before take off is provided with: a target indication that constitutes a target locating point used for aerial photogrammetry; and position determining units that determine the position of the UAV 200 with respect to the launching pad in a state in which the position of the UAV 200 with respect to the target indication before take off is specified.