From Popular Mechanics:
Report: Russia Engaging in Widespread Satellite Navigation Spoofing
A new report claims that Russian security forces have engaged in extensive spoofing of satellite-based navigation systems, often to protect President Vladimir Putin or Russian armed forces. A report by the nonprofit think tank C4ADS has logged nearly 10,000 instances of spoofing of GPS-type navigation systems,
The report highlights interference operations in the Global Navigation Satellite System, or GNSS. These satellites relay position, navigation and timing signals to cell phones, car navigation systems, and ships at sea 24/7 across the globe, providing location and navigation detail with unparalleled accuracy. Commonly known as GPS in the United States, Russia operates a similar system named GLONASS, Europe’s system is called Galileo, China’s is Beidou, and Japan’s QZSS.
C4ADS is the Center for Advanced Defense Studies and is an independent Military think-tank in D.C. Their website is here C4ADS and the 66 page report can be downloaded from here: Above Us Only Stars
Just skimmed it for a bit but sobering reading. So much of our lives are tied into the GPS system. A lot of the technologies have nothing to do with personal navigation - Enhanced 911 emergency services, all sorts of search and rescue, ambulance, police and fire services. GPS also provides highly accurate timing services to many agencies (including me). Links between telescopes are coordinated with GPS timing. Cell phone and ham radio use GPS timing services. The list is long and the idea that this signal can be distorted or warped gives me a case of the blue-blind paralytic willies...
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