GPS Denial Detection via Ad Hoc Network Signal Comparison
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Solution Overview
Problem
GPS systems are vulnerable to jamming, which can disrupt navigation and communication, particularly in military contexts, and existing technologies lack effective methods for detecting and controlling jamming sources to minimize impact on friendly forces while targeting enemy GPS receivers.
Innovation Solution
A system comprising multiple GPS receivers, remote sensor interfaces, and a computer management system that forms an ad hoc wireless network to detect and locate GPS denial devices, and selectively activate GPS deniers to disrupt enemy receivers while ensuring friendly receivers operate accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS receivers are deployed to determine location, then navigation accuracy is improved, but vulnerability to GPS denial devices increases
Solution Approach 1:
The system continuously monitors GPS signal quality and compares current location data with historical data to detect anomalies indicating GPS denial device presence. When denial is detected, the system provides feedback to alert operators and can trigger alternative navigation methods or counter-measures.
Solution Approach 2:
The patent introduces an intermediary detection layer between the GPS receiver and the navigation system. This intermediary component analyzes signal characteristics and location consistency to identify GPS denial devices, acting as a mediator that protects the navigation system from direct vulnerability.
2Adaptability or versatility
If GPS denial devices are deployed to disrupt enemy receivers, then tactical advantage is improved, but risk of disrupting friendly receivers increases
Solution Approach 1:
The system enables localized GPS denial by activating denial devices only in specific geographic areas where enemy receivers are detected. The detection and location capabilities allow the system to apply GPS denial locally rather than universally, preserving GPS functionality in friendly zones while maintaining tactical advantage in enemy areas.
Solution Approach 2:
The system uses feedback from GPS receivers to determine location and signal quality to intelligently control GPS denial device activation. This feedback mechanism ensures that denial is applied only where necessary and allows real-time adjustment to prevent disruption to friendly forces.
3Difficulty of detecting and measuring
If multiple GPS receivers are deployed to form ad hoc network, then detection capability is improved, but system complexity increases
Solution Approach 1:
The patent makes GPS receivers multi-functional by enabling them to serve both as navigation devices and as detection sensors for GPS denial devices. The same GPS receivers that provide location data also monitor signal characteristics and participate in the ad hoc network for detection purposes, eliminating the need for separate detection hardware.
Solution Approach 2:
The system merges the navigation function and detection function into a single integrated system. GPS receivers combine location determination with signal monitoring and communication through the ad hoc network, consolidating multiple functions into existing components rather than adding separate systems.
Data Source
AI summary
A system for detecting a GPS denial device includes a plurality of GPS receivers, a plurality of remote sensor interfaces, a gateway, and a computer management system. Each of the plurality of GPS receivers determines positional parameters based on the signals received from the GPS satellites. Each remote sensor interface is associated with a respective GPS receiver such that each remote sensor interface extracts the GPS parameters from a respective GPS receiver. The plurality of remote sensor interfaces and the gateway are communication nodes in an ad hoc wireless network. The gateway receives the extracted GPS parameters from the remote sensor interfaces. The computer management system receives the extracted GPS parameters from the gateway and compares the determined GPS parameters with historical GPS parameters for the plurality of GPS receivers to detect whether an active GPS denial device is present in the vicinity of the system.