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8

You are correct, the time difference generates hyperboloids in 3D space and as such can be used to find the 3D position. However, if the transmitters are far apart and/or in the same plane, the geometry of the intersecting hyperboloids is such that the accuracy in the vertical axis is very poor. When the receiver is in the same horizontal plane as the ...


3

In good weather, airports can move lots of aircraft because the ATC separation standards are much less than the bad weather, poor visibility ATC separation standards. “Current technology” really hasn’t changed much over the years as ground based ILS CAT II and CAT III are still the most accurate ways to get get aircraft on the ground in bad weather. Most ...


2

There's always the possibility of machine error, human mistakes, and "blind spots". These can be minimized but never entirely eliminated. Things like minimum separations are set to provide a margin of safety in case things go wrong. For landings, it is also necessary to provide a plane that has just landed with enough time to clear the active runway before ...


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