GNSS (Global Navigation Satellite System) is the generic term that encompasses all satellite navigation systems, such as Galileo (Europe), GPS (USA), GLONASS (Russia), or BeiDou (China).
What does “GNSS-denied” mean? A GNSS-denied environment is one where the signal from these satellites is unavailable or unreliable. This can occur due to natural or technical causes, such as operating among tall buildings, in tunnels, dense forests, or indoors where the physical signal is blocked, or due to intentional interference in defense contexts.
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