Global Positioning System
Complex network of satellites that transmit signals to ground receviers in cars, boats, airplanes (see also VOR). The GPS receiver uses the signals from the satellites (which are over 15,000 miles away!) and uses them to find your location, anywhere in the world, with incredable accuracy.
Complex network of satellites that transmit signals to ground receviers in cars, boats, airplanes (see also VOR). The GPS receiver uses the signals from the satellites (which are over 15,000 miles away!) and uses them to find your location, anywhere in the world, with incredable accuracy.
by IrishRepublicanArmy October 15, 2003
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Automatic Direction Finding System
a navagation system used by aircraft and sea-going ships. It consists of one or more ground stations that transmit a signal in the 225 to 500 kHz (.225 to .500 MHz) range. Because of the low-frequnecy of these signals, their range is very good and not limited by the line-of-sight range of the VOR system. The recevier in the airplane/boat uses a loop antenna to "home-in" on the station. There is also a long-wire receiving antenna installed on many aircraft. Most ADF receivers can also recieve the AM broadcast band (530 to 1710 kHz) so pilots can also home in on powerful broadcast stations.
ADF signals should not be used in thunderstorms because the high amount of electro-magnetic interferance that lightening causes.
Many pilots can't even use the ADF system, which is a shame, becuase of better systems such as VOR and the GPS systems.
or
Automatic Direction Finding System
a navagation system used by aircraft and sea-going ships. It consists of one or more ground stations that transmit a signal in the 225 to 500 kHz (.225 to .500 MHz) range. Because of the low-frequnecy of these signals, their range is very good and not limited by the line-of-sight range of the VOR system. The recevier in the airplane/boat uses a loop antenna to "home-in" on the station. There is also a long-wire receiving antenna installed on many aircraft. Most ADF receivers can also recieve the AM broadcast band (530 to 1710 kHz) so pilots can also home in on powerful broadcast stations.
ADF signals should not be used in thunderstorms because the high amount of electro-magnetic interferance that lightening causes.
Many pilots can't even use the ADF system, which is a shame, becuase of better systems such as VOR and the GPS systems.
by IrishRepublicanArmy October 21, 2003
Get the ADF mug.An organization formed at Fairfax High School. The Future Hobos of America (FHA) really doesn't do anything, except form more FHA groups at other schools and sit around doing nothing.
by IrishRepublicanArmy February 11, 2004
Get the Future Hobos of America mug.by IrishRepublicanArmy December 12, 2003
Get the battleship mug.crew slang:
park in northern virginia, run by the Northern Virginia Regional Park Authority. Its right on the occoquan sewage dump (a.k.a. occoquan reservoir)
place were all the good crew teams practice (or in the case of TJ crew, sit around and play on thier TI-83s). Also the site of the NCASRA crew races. Good place with lots of good memories.... also where fairfax crew owns all.
park in northern virginia, run by the Northern Virginia Regional Park Authority. Its right on the occoquan sewage dump (a.k.a. occoquan reservoir)
place were all the good crew teams practice (or in the case of TJ crew, sit around and play on thier TI-83s). Also the site of the NCASRA crew races. Good place with lots of good memories.... also where fairfax crew owns all.
Occoquan, here we come...
by IrishRepublicanArmy October 21, 2003
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by IrishRepublicanArmy December 22, 2003
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