"See and avoid." It's the basis of traffic separation, the
primary way we avoid running into one another. Even pilots on
Instrument Flight Rules (IFR) clearances are responsible for
looking out the window to avoid other airplanes when flying in
visual conditions. However, new technologies are springing up to
supplement the Mark One Eyeball.
Refers to usability of the satellite signal, and means that the
signal has not been corrupted. Integrity is the ability of a system
to provide timely warnings to users when the system should not be
used for navigation as a result of errors or failures in the
system.
Source: Japanese Foreign Minister Taro Aso, on
his country's hard-line stance towards sanctions against North
Korea over the communist regime's recent testing of
short-and-long-range missiles.
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