CAST navigation: Signal diversity and the PHGPST
from GPS World
From Don Jewell: As loyal readers are aware, I have long been an advocate of signal diversity as a solution to many of the ills that plague the GPS user, especially outdated user equipment. Signal diversity potentially provides users with more signals and signal origins. More signals improve availability, the No. 1 user criteria by a huge margin, and serve as a defense against jamming and spoofing.
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