this post was submitted on 01 May 2024
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123
The Dangerous Rise of GPS Attacks (www.wired.com)
submitted 6 months ago by [email protected] to c/[email protected]
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cross-posted from: https://lemm.ee/post/30835184

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[โ€“] [email protected] 13 points 6 months ago* (last edited 6 months ago) (1 children)

The Chinese one is Beidou and I fail to understand why planes use only GPS when my phone has all 4.

[โ€“] [email protected] 13 points 6 months ago

Planes only use GPS because GPS has a very rigorous signal integrity program that others don't have. The "safety of life" requirements on GPS are onerous. Also, GPS has both L1 C/A and L5 (not enough L1C or L2C to be useful yet) signals. I don't think Galileo or GLONASS have extra signals, but I think Beidou does (not an expert on other systems).

Just this January, ESA completed the safety of life analysis requirements for Galileo to be used as a civil aviation signal.