GPS satellites orbit 12,500 miles from the Earth – resulting in very low signal strength

Can GPS be Trusted? Part 3

In my previous posts, I discussed the shortcomings and benefits of utilizing GPS as a primary Position Navigation and Timing (PNT) source. I also examined methods that provide Assured PNT (or A-PNT). These include hardening the GPS signal against jamming, while at the same time jamming the enemy’s receivers, utilizing encryption to provide spoofing immunity, […]

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GPS satellites orbit 12,500 miles from the Earth – resulting in very low signal strength

Can GPS be Trusted? Part 2

In my previous blog post, Can GPS be Trusted? Part 1, I explained why commercial GPS position, navigation and timing (PNT) cannot be trusted for critical systems. This blog explains how a trusted PNT system can still use a GPS as the primary PNT source. Adding Trust with A-PNT Assured Position, Navigation and Timing (also known […]

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