Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Advanced_Extremely_High_Frequency> ?p ?o }
- Advanced_Extremely_High_Frequency abstract "Advanced Extremely High Frequency (AEHF) is a series of communications satellites operated by the United States Air Force Air Force Space Command. They will be used to relay secure communications for the Armed Forces of the United States, the British Armed Forces, the Canadian Forces and the Royal Netherlands Armed Forces. The system will consist of six satellites in geostationary orbits, three of which have been launched. AEHF will replace the older Milstar system and will operate at 44 GHz Uplink (EHF band) and 20 GHz Downlink (SHF band).AEHF satellites use a large number of narrow spot beams directed towards the Earth to relay communications to and from users. Crosslinks between the satellites allow them to relay communications directly rather than via a ground station. The satellites are designed to provide jam-resistant communications with a low probability of interception. They incorporate frequency-hopping radio technology, as well as phased array antennas that can adapt their radiation patterns in order to block out potential sources of jamming.AEHF incorporates the existing Milstar low data-rate and medium data-rate signals, providing 75–2400 bit/s and 4.8 kbit/sec–1.544 Mbit/s respectively. It also incorporates a new signal, allowing data rates of up to 8.192 Mbit/s. When complete, the space segment of the AEHF system will consist of six satellites, which will provide coverage of the surface of the Earth between latitudes of 65 degrees north and 65 degrees south.The initial contract for the design and development of the AEHF satellites was awarded to Lockheed Martin Space Systems and Northrop Grumman Space Technology in November 2001, and covered the System Development and Demonstration phase of the program. The contract covered the construction and launch of three satellites, and the construction of a mission control segment. The contract was managed by the MILSATCOM Program Office of the United States Air Force Space and Missile Systems Center. Like the Milstar system, AEHF will be operated by the 4th Space Operations Squadron, located at Schriever Air Force Base.".
- Advanced_Extremely_High_Frequency thumbnail AEHF_1.jpg?width=300.
- Advanced_Extremely_High_Frequency wikiPageExternalLink nasatechAEHF1.html.
- Advanced_Extremely_High_Frequency wikiPageExternalLink ntAEHF-2_PAGE.html.
- Advanced_Extremely_High_Frequency wikiPageExternalLink ntAEHF-3_PAGE.html.
- Advanced_Extremely_High_Frequency wikiPageID "13236983".
- Advanced_Extremely_High_Frequency wikiPageLength "10453".
- Advanced_Extremely_High_Frequency wikiPageOutDegree "46".
- Advanced_Extremely_High_Frequency wikiPageRevisionID "659679297".
- Advanced_Extremely_High_Frequency wikiPageWikiLink 4th_Space_Operations_Squadron.
- Advanced_Extremely_High_Frequency wikiPageWikiLink A2100.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Aerojet.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Air_Force_Space_Command.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Apogee.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Apsis.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Armed_Forces_of_the_United_States.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Armed_forces_of_the_Netherlands.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Atlas_V.
- Advanced_Extremely_High_Frequency wikiPageWikiLink British_Armed_Forces.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Canadian_Armed_Forces.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Canadian_Forces.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Cape_Canaveral_Air_Force_Station_Space_Launch_Complex_41.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Category:Communications_satellite_constellations.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Category:Communications_satellites.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Category:Military_communications.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Category:Military_satellites.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Category:Military_space_program_of_the_United_States.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Category:Telecommunications_equipment.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Communications_satellite.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Electrically_powered_spacecraft_propulsion.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Extremely_high_frequency.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Frequency-hopping_spread_spectrum.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Geostationary_orbit.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Geostationary_transfer_orbit.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Geosynchronous_Transfer_Orbit.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Geosynchronous_orbit.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Hall_effect_thruster.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Latitude.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Launch_vehicle.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Liquid_Apogee_Engine.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Lockheed_Martin.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Lockheed_Martin_A2100.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Milstar.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Northrop_Grumman.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Perigee.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Phased_array.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Radiation_pattern.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Radio_jamming.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Schriever_Air_Force_Base.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Space_and_Missile_Systems_Center.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Super_high_frequency.
- Advanced_Extremely_High_Frequency wikiPageWikiLink USA-214.
- Advanced_Extremely_High_Frequency wikiPageWikiLink United_States.
- Advanced_Extremely_High_Frequency wikiPageWikiLink United_States_Air_Force.
- Advanced_Extremely_High_Frequency wikiPageWikiLink United_States_Armed_Forces.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Wideband_Global_SATCOM.
- Advanced_Extremely_High_Frequency wikiPageWikiLink Wideband_Global_SATCOM_system.
- Advanced_Extremely_High_Frequency wikiPageWikiLinkText "AEHF-1".
- Advanced_Extremely_High_Frequency wikiPageWikiLinkText "AEHF-2".
- Advanced_Extremely_High_Frequency wikiPageWikiLinkText "AEHF-3".
- Advanced_Extremely_High_Frequency wikiPageWikiLinkText "AEHF-4".
- Advanced_Extremely_High_Frequency wikiPageWikiLinkText "AEHF-5".
- Advanced_Extremely_High_Frequency wikiPageWikiLinkText "AEHF-6".
- Advanced_Extremely_High_Frequency wikiPageWikiLinkText "Advanced Extremely High Frequency (AEHF)".
- Advanced_Extremely_High_Frequency wikiPageWikiLinkText "Advanced Extremely High Frequency".
- Advanced_Extremely_High_Frequency wikiPageWikiLinkText "Advanced_Extremely_High_Frequency#Second_AEHF_Satellite_.28USA-235.29".
- Advanced_Extremely_High_Frequency wikiPageWikiLinkText "Advanced_Extremely_High_Frequency#Third_AEHF_Satellite_.28USA-244.29".
- Advanced_Extremely_High_Frequency applications "Military communications".
- Advanced_Extremely_High_Frequency autoconvert "off".
- Advanced_Extremely_High_Frequency built "3".
- Advanced_Extremely_High_Frequency bus A2100.
- Advanced_Extremely_High_Frequency bus Lockheed_Martin_A2100.
- Advanced_Extremely_High_Frequency caption "Artist's impression of an AEHF satellite".
- Advanced_Extremely_High_Frequency country United_States.
- Advanced_Extremely_High_Frequency first "USA-214, 2010-08-14".
- Advanced_Extremely_High_Frequency hasPhotoCollection Advanced_Extremely_High_Frequency.
- Advanced_Extremely_High_Frequency launched "3".
- Advanced_Extremely_High_Frequency lifetime "4.418064E8".
- Advanced_Extremely_High_Frequency manufacturer Lockheed_Martin.
- Advanced_Extremely_High_Frequency manufacturer Northrop_Grumman.
- Advanced_Extremely_High_Frequency name "Advanced Extremely High Frequency".
- Advanced_Extremely_High_Frequency operational "0".
- Advanced_Extremely_High_Frequency operator United_States_Air_Force.
- Advanced_Extremely_High_Frequency orbits Geosynchronous_orbit.
- Advanced_Extremely_High_Frequency orders "3".
- Advanced_Extremely_High_Frequency status "Active".
- Advanced_Extremely_High_Frequency status "In production".
- Advanced_Extremely_High_Frequency wikiPageUsesTemplate Template:Asof.
- Advanced_Extremely_High_Frequency wikiPageUsesTemplate Template:Citation_needed.
- Advanced_Extremely_High_Frequency wikiPageUsesTemplate Template:Infobox_spacecraft_class.
- Advanced_Extremely_High_Frequency wikiPageUsesTemplate Template:Main.
- Advanced_Extremely_High_Frequency wikiPageUsesTemplate Template:Reflist.
- Advanced_Extremely_High_Frequency wikiPageUsesTemplate Template:Update_after.
- Advanced_Extremely_High_Frequency subject Category:Communications_satellite_constellations.
- Advanced_Extremely_High_Frequency subject Category:Communications_satellites.
- Advanced_Extremely_High_Frequency subject Category:Military_communications.
- Advanced_Extremely_High_Frequency subject Category:Military_satellites.
- Advanced_Extremely_High_Frequency subject Category:Military_space_program_of_the_United_States.
- Advanced_Extremely_High_Frequency subject Category:Telecommunications_equipment.
- Advanced_Extremely_High_Frequency hypernym Series.