"Signals from Global Navigation Satellite Systems are quite vulnerable. They are exceptionally weak, meaning that any radio noise near their frequency, accidental or malicious, can interfere with reception. I am confident that there are people in every government who understand the problem. The challenge is getting leadership to both understand and act to reduce the risk."
"At its core, satellite navigation is a matter of time. GNSS satellites carry extremely precise atomic clocks and constantly broadcast two key pieces of information: their exact position in orbit and the exact moment the signal was sent. Meanwhile, on Earth, receivers like your smartphone, car or scooter, or an airplane or ship pick up these signals to determine their exact position."
Global Navigation Satellite Systems (GNSS) comprise four satellite systems orbiting Earth, with GPS being the most widely used. These systems work by transmitting precise atomic clock signals and orbital position data to ground receivers, which calculate location using signals from multiple satellites. GNSS technology is highly accurate, fast, and deeply integrated into daily life for navigation, transportation, and logistics. However, GNSS signals are exceptionally weak and vulnerable to radio interference, both accidental and malicious. This vulnerability poses significant risks, as jamming or spoofing could disrupt critical infrastructure. Four major powers operate global navigation systems: the US (GPS), Russia, Europe, and China, with these systems playing central roles in both civilian applications and military operations.
#gps-and-gnss-technology #satellite-navigation-systems #signal-vulnerability-and-jamming #global-positioning-infrastructure
Read at www.dw.com
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