irishrepublicanarmy's definitions
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
Get the GPSmug. Automatic Direction Finder
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.
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 ADFmug. An excellent program which removes Spyware, Adware, daillers and many other malacious programs and files on your computer. It can also fix registry problems and remove usage tracks from your registry. It is a free download as are the update files (same with Ad-Aware, another great program).
I use both Ad-Aware and Spybot - Search & Destroy on my computer to remove spyware and other bad programs.
by IrishRepublicanArmy June 5, 2004
Get the Spybot - Search & Destroymug. for more information about the NOVA area, look at theses definitions:
Fairfax County Public Schools
Virginia
NOVA
Chantilly High School
Fairfax High School
Fairfax County Public Schools
Virginia
NOVA
Chantilly High School
Fairfax High School
by IrishRepublicanArmy January 5, 2004
Get the 703mug. by IrishRepublicanArmy January 1, 2004
Get the PSK31mug. The time required for a radar pulse to travel 1 mile (~1.6 km) to an object, i.e., to a target; reflect; and return to the receiver. Note: A radar statute mile is approximately 10.8 ms (microseconds); a radar nautical mile is approximately 12.4 s. The time for any other radar unit distance is readily determined, such as the radar meter or the radar kilometer. NTIA
by IrishRepublicanArmy January 24, 2004
Get the radar milemug. by IrishRepublicanArmy November 13, 2003
Get the NSAmug.