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Loss of satellite signal is a well-known operational risk, but few mariners are aware of the threat of GNSS providing a false time, position or direction even when still available.
When these position errors exceed a safe margin of error, they can cause ships to derive and transmit dangerously misleading Information. GNSS is not designed with inherent real-time integrity, which refers to the users’ ability to trust the data and receive timely warnings if it is unreliable…
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