GPS Position Integrity Verification via Base Station Authentication
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Solution Overview
Problem
Existing methods for verifying GPS position information in drones are ineffective against GPS spoofing attacks, leading to increased weight and cost due to the need for additional devices.
Innovation Solution
A method and system that authenticate connected base stations and verify GPS position information by comparing measured and satellite-provided data, calculating dynamics, and confirming differences within a preset error range, without requiring additional hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional physical devices such as receivers are added to verify GPS position information, then GPS spoofing protection is improved, but the weight of the drone increases
Solution Approach 1:
The patent introduces base stations as intermediary elements that facilitate GPS verification without adding weight to the drone. The base stations receive signals from both GPS satellites and the drone, enabling position verification through wireless communication infrastructure rather than onboard receivers.
Solution Approach 2:
The patent replaces the mechanical approach of adding physical verification receivers to the drone with an electronic/communication-based solution. The verification is achieved through signal processing and communication protocols between the drone, base stations, and GPS satellites, eliminating the need for additional hardware on the drone.
2Reliability
If additional physical devices such as receivers are added to verify GPS position information, then GPS spoofing protection is improved, but the cost increases
Solution Approach 1:
The base stations serve as cost-effective intermediaries that leverage existing wireless communication infrastructure. Rather than equipping each drone with expensive verification hardware, the system uses shared base station resources to provide GPS verification services to multiple drones.
Solution Approach 2:
The base stations perform multiple functions including GPS signal verification, wireless communication with drones, and position calculation. This multi-functionality reduces the need for specialized expensive hardware on each drone, as the verification capability is provided by the universal base station infrastructure.
3Reliability
If base station authentication is implemented, then system security is improved, but communication complexity increases
Solution Approach 1:
The authentication process is performed in advance before GPS verification begins. The drone and base station establish authenticated communication channels beforehand, so that subsequent GPS verification can proceed without repeated authentication overhead. The secret keys and authentication credentials are pre-configured.
Solution Approach 2:
The authentication mechanism provides feedback to the drone about the legitimacy of base stations. Through authenticated communication, the drone receives confirmation of base station identity, enabling it to trust the position verification data provided by authenticated base stations without continuous complex verification.
Data Source
AI summary
A method and a system for verifying integrity of GPS position information according to a disclosed embodiment is a method performed in an unmanned moving object including one or more processors and a memory for storing one or more programs executed by the one or more processors. The method includes an operation of performing an authentication process for a connected base station, by the unmanned moving object, an operation of measuring a position of the unmanned moving object by performing wireless communication with a plurality of authenticated base stations, and an operation of verifying the GPS position information by comparing a value of the measured position with a position value of the GPS position information received from a satellite.