Researchers Explore Cell Signals as GPS Backup for Aviation

Sandia National Laboratories and Ohio State University are developing a navigation system using cell tower signals to assist when GPS is compromised.

Researchers are investigating the use of cell tower signals as a backup navigation system for aircraft, addressing vulnerabilities in GPS technology.
GPS systems, while reliable, are susceptible to disruptions such as jamming and spoofing, which pose risks to aviation safety.
The experimental technology involves detecting radio frequency waves from cell towers at altitudes up to 82,000 feet using weather balloons.
Preliminary findings suggest these signals could be used for navigation, potentially providing a safer alternative when GPS is unreliable.
Challenges remain, including automating signal processing and developing algorithms to accurately calculate position and velocity from non-GPS signals.