Communications is not just for voice and data anymore, but also for location-based telemetry. In fact, the next-generation beyond GPS are the location-based service coming from Boeing, Glonass and NextNav (pictured). Emergency beacons around the perimeter of the disaster zone use the RF signals to triangulate the locations inside.
Tracking devices from TRX Systems and others add MEMS inertial sensors for dead reckoning that enable people and assets to be tracked with centimeter accuracy in locations where GPS, WiFi and even cellular networks don’t operate.
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