Archive for December 4th, 2017

What if the Russians, North Koreans, Iranians or Mother Nature were to jam GPS satellites?

December 4, 2017

An interesting question posed in a WSJ commentary …
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Answer: We’d be in deep yogurt … and it just wouldn’t be an inability to drive to an unfamiliar destination.

To that point, according to the Department of Homeland Security has identified “18 Critical Infrastructure and Key Resource sectors” … and, 15 of the 18 are GPS-reliant.

That makes sense since the satellite-based Global Positioning System was built primarily for U.S. military ops and then repurposed to civilian applications air traffic control, weather monitoring and precise time-synchronization.

For background, according to NASA:

The Global Positioning System is a United States space-based radionavigation system that helps pinpoint a three dimensional position to about a meter of accuracy (for example latitude, longitude and altitude) and provide nano-second precise time anywhere on Earth.

GPS is currently comprised of a constellation of 24 US government satellites flying in six orbital planes … circling about 12,550 miles above the Earth … monitored by an extensive network of land-based receiving stations.

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So, what’s our Plan B if the satellite-based GPS system goes down?

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