MEDICAL, MILITARY & INDUSTRIAL ELECTRONICS


The growing threat of GPS  and strategies to combat it


 Global Positioning System (GPS) 


W


hether guiding aircraft, synchronizing power grids, or enabling ride-sharing  However, this dependency has also introduced vulnerabilities – most notably, GPS 


  broadcasts counterfeit GPS signals to deceive receivers, leading them to display incorrect   misleads systems, creating the illusion of  


How GPS works and why it’s vulnerable


GPS receivers determine location by     manipulates this process by sending stronger, counterfeit signals that overpower authentic ones, fooling receivers into miscalculating 


Strategies for preventing GPS 


 combination of technological innovations, regulatory measures, and increased  1. Signal Monitoring and Anomaly Detection   unusually strong signals or sudden shifts in  


      3. Cryptographic Authentication Modern GPS satellites incorporate encryption 


   


4. Crowd-Sourced Data Analysis  multiple GPS receivers, inconsistencies can  helps isolate false signals and validate 


Hardening GPS signals and systems    MEMS-Based Oscillators for Timing Stability  oscillators are revolutionizing precision  allow GPS-dependent systems to maintain accurate time even if GPS signals are   


Multi-Antenna Systems and Beamforming  beamforming—comparing the angles of incoming signals to distinguish authentic ones   


GPS Firewalls


  out signals that do not match expected  in maritime and military applications, with ongoing efforts to miniaturize them for 


  independent navigation data for short   


Ensuring Secure and Reliable GPS for the Future


Reliable GPS data is essential for public safety,  From coordinating emergency responses     technology, we can protect the integrity of our positioning and timing systems, ensuring their     


JUNE 2025 | ELECTRONICS FOR ENGINEERS 31


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