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In article ,
Jackie wrote: That's interesting. So if what you say is correct, an airport surveillance radar has very little coverage of the area, say at the top of a class B airspace because to cover that high an angle is "wasteful." For example, a VFR plane flying legally just above the B ceiling could very well be out of coverage of the radar that is supposed to be also monitoring another high performance aircraft poking through that ceiling at a high rate of speed. I'm not sure I agree with such an energy saving measure. Over the top of a class B airport is where the planes taking off from that airport usually aren't. They go out the sides, not straight up. There is usually more then one radar feed for a TRACON, so although the radar at the primary airport for the class B can't see right above it, other radars in the area provide that coverage. For example, SFO has a radar station, as does OAK and NUQ (Moffett Field). They overlap each other so there is fairly complete coverage. John -- John Clear - http://www.clear-prop.org/ |
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