GPS III’s Long Journey Is Picking Up Speed

With the launch of a fifth new-generation satellite, the US finally has a constellation able to globally beam M-Code signals that are tough to spoof or jam.

Today, the Space Force launched its newest satellite, one of only a handful of the new GPS III design, which is more accurate and more resistant to interference—like signal-jamming—than its older siblings.

The launch means that more of the US’s GPS satellite constellation has stronger position, navigation, and timing abilities, and is designed to live longer than its predecessors—around 15 years, by which time people not born yet could be using its services for tasks that seem sci-fi now. (Designing for the longer-term

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