NextNav’s TerraPoiNT is a pseudolite that is based on a dedicated network of ground-based transmitters that broadcast 3D radio-positioning signals as a backup in case of a GPS outage.
Credit: NextNav
From low Earth orbit to quantum, alternatives line up to complement GPS. Vision-Aided Vision-aided navigation matches features in images from downward-looking cameras with onboard digital maps to provide passive, unjammable positioning with GPS-like accuracy. Using visual, infrared and satellite...
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