UAV RTK Ground Station Switching for Accurate Flight Paths
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Solution Overview
Problem
In areas with complex terrains or remote locations, establishing reference base stations for high-precision positioning of unmanned aerial vehicles (UAVs) is costly and challenging, limiting the accuracy and cost-effectiveness of their navigation.
Innovation Solution
A method where UAVs receive positioning auxiliary information from mobile ground stations, switching between them based on signal strength to maintain accurate flight paths without the need for pre-disposed reference base stations, using RTK technology for improved positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a reference base station is pre-disposed to improve positioning accuracy, then positioning accuracy is improved, but implementation cost and complexity increase
Solution Approach 1:
The patent uses mobile terminals (smartphones, tablets) as temporary reference base stations instead of permanent, expensive infrastructure. These mobile devices provide positioning auxiliary information temporarily during UAV flight, eliminating the need for costly pre-disposed reference base stations while maintaining positioning accuracy through dynamic switching between multiple mobile terminals.
Solution Approach 2:
The patent introduces mobile terminals as intermediary devices between the UAV and traditional reference base stations. These intermediaries relay positioning auxiliary information to the UAV, enabling high-precision positioning without requiring direct connection to expensive permanent infrastructure. The mobile terminals act as flexible mediators that can be deployed temporarily in various locations.
2Measurement precision
If a reference base station is pre-disposed to improve positioning accuracy, then positioning accuracy is improved, but deployment difficulty increases in complex terrains
Solution Approach 1:
The patent replaces difficult-to-deploy permanent reference base stations with portable mobile terminals that can be easily transported and temporarily positioned in complex terrain areas. These mobile devices require no complex installation or infrastructure, making them suitable for remote or difficult-to-access locations where traditional base stations would be challenging to deploy.
Solution Approach 2:
The patent transitions from static, fixed reference base stations to dynamic mobile terminals that can move and be repositioned as needed. This dynamic approach allows the system to adapt to complex terrain by placing mobile terminals in optimal locations temporarily, rather than requiring permanent infrastructure in every difficult-to-reach area.
3Device complexity
If mobile terminals are used instead of pre-disposed base stations, then implementation cost is reduced, but positioning accuracy may be affected
Solution Approach 1:
The patent divides the positioning coverage area into multiple zones, each served by different mobile terminals. Instead of relying on a single mobile terminal for the entire area, the system segments the service region and uses multiple mobile devices working in coordination, with the UAV switching between them based on location. This segmentation maintains positioning accuracy across the entire flight area while using cost-effective mobile terminals.
Solution Approach 2:
The patent implements a switching mechanism that continuously monitors signal quality and positioning accuracy from multiple mobile terminals. Based on this feedback, the system dynamically selects the optimal mobile terminal for providing positioning auxiliary information, ensuring that accuracy requirements are maintained while utilizing the flexibility and cost-effectiveness of mobile devices.
Data Source
AI summary
Disclosed are a method for controlling an unmanned aerial vehicle, a method for controlling outbound and return trips of an unmanned aerial vehicle, an unmanned aerial vehicle, a medium, and a control system. The method for controlling an unmanned aerial vehicle includes: obtaining, in a process of flying along a target course sent by a first ground station, first positioning auxiliary information sent by the first ground station; adjusting a flight attitude according to the first positioning auxiliary information, to fly along the target course; in a case of determining that a ground station switching condition of the second ground station is satisfied, obtaining the second positioning auxiliary information sent by the second ground station; and adjusting the flight attitude according to the second positioning auxiliary information, to fly along the target course to reach the second location point.