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	Deep Space Network - Wikipedia, the free encyclopedia
		Deep Space Network (DSN) is an international network of radio antennas that supports interplanetary spacecraft missions, and radio and radar astronomy observations for the exploration of the solar system and the universe.
		The network is a facility of the JPL and is managed and operated for NASA by the California Institute of Technology (Caltech).
		The forerunner of the DSN was established in January, 1958, when JPL, then under contract to the U.S. Army, deployed portable radio tracking stations in Nigeria, Singapore, and California to receive telemetry and plot the orbit of the Army-launched Explorer 1, the first successful U.S. satellite.
	en.wikipedia.org /wiki/Deep_Space_Network (751 words)

	Deep Space Network (Site not responding. Last check: 2007-10-21)
		Deep space missions are complicated by the reduction in strength of the signal by the time it has traveled the great distances to reach Earth, therefore requiring the greater reflecting surface of the larger antennas.
		Antennas used for deep space missions are designed to track at very precise rates - at thousandths of a degree per second - to keep the antenna pointed at the spacecraft as the Earth is rotating at 0.004 degrees per second.
		The DSN antennas are the parabolic reflectors whose efficiency and high "gain" are critical to the success of deep space communications.
	www.mtcpasadena.com /dsnlink.htm (1556 words)

	Stardust \| JPL \| NASA
		Data from Stardust, called telemetry, is received as a coded bitstream, then forwarded to the Deep Space Operations Center at JPL for processing and distribution to the mission managers and mission scientists.
		DSN antennas have parabolic reflector dishes, some as large as 70 meters (230 ft.) in diameter, to capture the signal.
		A "packet" of data, called a "sequence" is pre-pared and forwarded by the Deep Space Operations Center to the appropriate complex for transmission to the spacecraft.
	stardust.jpl.nasa.gov /tech/dsn.html (297 words)

	Space Today Online - NASA Deep Space Network communications with interplanetary probes
		DSN also is used by radio and radar astronomers to observe the Solar System and the Universe.
		The DSN antennas also are used for radar observations of bodies in the Solar System and for radioastronomy observations of the Universe.
		In 2002, the Deep Space Network engineers celebrated 25 years of two-way communication with the Voyager-1 and Voyager-2 spacecraft, which today are exploring the far outer reaches of the Solar System.
	www.spacetoday.org /SolSys/DeepSpaceNetwork/DeepSpaceNetwork.html (1973 words)

	Basics of Space Flight Section III. Space Flight Operations
		The DSN enjoys a rich history that is closely intertwined with the history of the space age and the cutting edge of development in telecommunications technology.
		F&T is the DSN's "internal clock." With precision and accuracy that are at the forefront of world class frequency and timing science, the Frequency & Timing Subsystem is essential to nearly every part of the DSN, enabling the other six data types to exist.
		DSN then delivers the TLM data to the flight project for display, distribution, storage, and analysis, supporting spacecraft engineering management and eventual publication of scientific results.
	www2.jpl.nasa.gov /basics/bsf18-1.html (1357 words)

	Deep Space Network (Site not responding. Last check: 2007-10-21)
		None of these missions of discovery would be possible were it not for NASA's worldwide Deep Space Network (DSN), the essential radio communications link for NASA's interplanetary spacecraft and for some Earth-orbiting satellites as well.
		In addition to its communication functions, the DSN is used for radio science, radar observations, and radio astronomy.
		NASA's Science Mission Directorate is responsible for the DSN, which is managed, technically directed, and operated for NASA by the Jet Propulsion Laboratory (JPL), a division of the California Institute of Technology (Caltech) in Pasadena, California.
	deepspace.jpl.nasa.gov /dsn/brochure (159 words)

	Voyager - News - Profiles/Features - Deep Space Network
		The Deep Space Network (DSN) continues to support daily communications sessions with both of the now very distant Voyager-1 and Voyager-2 spacecraft.
		An analogy of successfully getting a DSN transmitter signal into Voyager-2's limited receiver window, would be like throwing a baseball across thousands of miles of ocean, and being able to get that baseball to pass through a very small port-hole window of a moving cruise ship.
		In the future, as these record-breaking distances continue to increase for both of these extreme-distance voyagers, the DSN is planning to implement new techniques to continue to be able to communicate with both spacecraft.
	voyager.jpl.nasa.gov /news/profiles_dsn.html (733 words)

	DSN Radio Astronomy (Site not responding. Last check: 2007-10-21)
		The NASA Deep Space Network is a world-wide network of large antennas with the principal function of maintaining communications with spacecraft beyond the Moon's orbit.
		The DSN was built and is managed by the Jet Propulsion Laboratory of the California Institute of Technology.
		With the concurrence of the NASA Office of Space Communications, the Director of JPL has authorized the use of the DSN for radio astronomy research which can only be accomplished with the unique capabilities of this network.
	dsnra.jpl.nasa.gov /index_old.html (775 words)

	Deep Space Network (DSN)
		Its three Deep Space Communications Complexes combine to make the largest and most sensitive telecommunications system in the world.
		To give some idea of DSN’s sensitivity, the antennas are still able to capture science information from the Voyager probes even though the downlink signal reaching a DSN antenna is 20 billion times weaker than the power level at which a digital watch functions.
		The DSN is a NASA facility managed and operated by JPL (Jet Propulsion Laboratory).
	www.daviddarling.info /encyclopedia/D/Deep_Space_Network.html (173 words)

	Deep Space Network Home Page
		The NASA Deep Space Network - or DSN - is an international network of antennas that supports interplanetary spacecraft missions and radio and radar astronomy observations for the exploration of the solar system and the universe.
		Public Tours of the Goldstone Deep Space Communications Complex are available.
		Multiple smaller antennas may eventually replace the large antennas of the Deep Space Network (DSN).
	deepspace.jpl.nasa.gov /dsn (347 words)

	Spaceflight Now \| Breaking News \| Deep Space Network gears up for interplanetary boom
		The new Deep Space Network dish is lifted into position on the new antenna being built near Madrid.
		The Deep Space Network, managed by NASA's Jet Propulsion Laboratory, Pasadena, Calif., is a worldwide network of antennas that supports interplanetary spacecraft missions, and some near-Earth missions.
		Each complex consists of several deep space stations equipped with large parabolic reflector antennas and ultra sensitive receiving systems that include a 70-meter-diameter (230-foot) antenna; a 34-meter-diameter (110-foot) high-efficiency antenna; at least one 34-meter (110-foot) beam waveguide antenna; and a 26-meter-diameter (85-foot) antenna.
	www.spaceflightnow.com /news/n0311/10dsn (1044 words)

	Planning for Deep Space Network Operations (Site not responding. Last check: 2007-10-21)
		Examples from the DSN domain are given that show the kinds of information the planner works with as well as what it produces.
		The Deep Space Network (DSN) is a worldwide network of deep space tracking and communications complexes located in Madrid, Spain, Canberra, Australia, and Goldstone, California.
		Precedence relations are specified by the nodes and arcs of the network.
	www-aig.jpl.nasa.gov /public/planning/papers/DSNSS95Final.html (3438 words)

	SPACE.com -- Red Planet Calling: How Mars Probes Phone Home (Site not responding. Last check: 2007-10-21)
		The network is Earth's prime hotline for planetary and deep space missions launched by NASA and other space agencies.
		Ground controllers are using two DSN tracking stations - one in Goldstone, California and the other in near Madrid, Spain - to communicate with the Mars-bound spacecraft.
		Communication with the Nozomi space probe is primarily handled through the Usuda Tracking Station in Japan, a 209-foot (64-meter) antenna that receives the spacecraft's X-band and S-band transmissions.
	www.space.com /businesstechnology/technology/calling_mars_031008.html (1275 words)

	Bracing for an Interplanetary Traffic Jam
		The DSN consists of three clusters of antennas spaced approximately 120 degrees apart around the world: at Goldstone, in California's Mojave Desert; near Madrid, Spain; and near Canberra, Australia.
		DSN antennas communicate with far-flung spacecraft at radio frequencies of 2.2 GHz, 8.4 GHz, and 32 GHz.
		Editor's Note: The Deep Space Network is funded and managed by NASA's Space Operations Management Office and Code S.
	science.nasa.gov /headlines/y2001/ast06jun_1.htm (1125 words)

	Spaceflight Now \| Breaking News \| Deep Space Network upgrading for 'crunch time'
		The Deep Space Network communicates with spacecraft that are anywhere from near Earth to out past Pluto.
		The network uses clusters of antennas at the three sites spaced approximately one-third of the way around the Earth from each other so they can cover spacecraft in any direction as the world turns.
		Projections for demands on the network during the November 2003 to February 2004 period indicate the greatest need for increased communications capacity will be at Madrid.
	spaceflightnow.com /news/n0105/10dsn (504 words)

	Yorkshire CND - NASA Awards Deep Space Network Operations Contract - 23/9/03 (Site not responding. Last check: 2007-10-21)
		The Deep Space Network, managed by JPL, is an international network of antennas that supports interplanetary spacecraft missions.
		ITT Industries will provide all necessary maintenance, operations and engineering support to operate and maintain JPL's Goldstone Deep Space Communications Complex, located near Barstow, Calif.; accomplish Deep Space Network operations and maintenance; support problem analysis and resolution; support network engineering efforts; and support radar and radio astronomy activities.
		JPL, a division of the California Institute of Technology in Pasadena, manages the Deep Space Network for NASA.
	www.cndyorks.gn.apc.org /yspace/articles/NASAdeepspacenetwork.htm (250 words)

	CNN.com - Craigslist gets beamed into space - Mar 24, 2005
		Commercial messages have long been transmitted into space, inadvertantly since the first radio and television signals were generated, but the Deep Space Communications Network joins a short list of intentional transmissions aimed at contacting someone -- anyone -- out in the Universe.
		Talktoaliens.com is operated by a small group of radio and broadcasts engineers who were part of the Civilian Space eXploration Team, or CSXT, a group that made news in May of last year when they successfully launched the first amateur rocket into space.
		Deep Space Communications Network aims their antenna at coordinates where there are no known satellites, and they estimate that their transmissions will travel approximately 1-3 light years.
	www.cnn.com /2005/TECH/space/03/23/craigslist.space (746 words)

	JPL's Deep Space Network
		The aim of the DSN is to maintain communications with all the un-manned space missions.
		There is the possibility that the DSN may be used in future manned space missions [30].
		The users of the space missions are connected to JPL and this is possibly going to be up-graded to ATM to support the new multimedia applications like tele-presence.
	www.eeng.dcu.ie /~murphyj/the/the/node58.html (395 words)

	Wiley::Antenna Arraying Techniques in the Deep Space Network
		Now implemented at the Goldstone Complex and other Deep Space Network (DSN) overseas facilities, antenna arraying provides flexible use of multiple antennas to increase data rates and has enabled NASA’s DSN to extend the missions of some spacecraft beyond their planned lifetimes.
		Antenna Arraying Techniques in the Deep Space Network introduces the development and use of antenna arraying as it is implemented in the DSN.
		The Deep Space Communications and Navigation Series is authored by scientists and engineers with extensive experience in astronautics, communications, and related fields.
	www.wiley.com /WileyCDA/WileyTitle/productCd-0471467995.html (294 words)

	Mars Network and Deep Space Network (Site not responding. Last check: 2007-10-21)
		The team found two different communication networks capable for our use, the Mars Network, and the Deep Space Network.
		The Mars Network consists of a number (5-7) of small satellites called Microsats and one or two larger satellites called Marsats.
		The Mars Network has a satellite system that is capable of avoiding flouts.
	mccoy.lib.siu.edu /sileven/communication/Marsnetwork.html (561 words)

	D S N Advanced Tracking and Observational Techniques Home Page
		The DSN is available to Guest Investigators who are undertaking ground-based research congruent with NASA's mission.
		The DSN Radio Astronomy website offers a further description and information on research, facilities, support, and development of new capabilities.
		The DSN ATOT Office is chartered to develop, advocate and to support innovative ways of using the capablities of the DSN for scientific and engineering researches which directly support NASA's mission.
	dsnscience.jpl.nasa.gov (462 words)

	Spacecraft: Deep Space Network
		If you're curious about how those robots communicate with us, read this informative article in Astrobiology Magazine: Winter Boon From Deep Space.
		It's mainly about the Deep Space Network, but it includes discussion of many of the missions as well.
		Incidentally, if you're interested in what life at one of the DSN ground stations might be like, I highly recommend the entertaining 2001 Australian film The Dish.
	www.aoe.vt.edu /~cdhall/Space/archives/000649.html (120 words)

	Deep Space Network : Deep Space Network Meets Higher Intelligence Agency - Listen, Review and Buy at ARTISTdirect (Site not responding. Last check: 2007-10-21)
		Deep Space Network : Deep Space Network Meets Higher Intelligence Agency
		Deep Space Network's David Moufang and Jonas Grossman team up with Birmingham ambient techno duo Higher Intelligence Agency for a deliriously funky foray into deep space ambient electro.
		Like HIA's summit with Finnish techno soloist Biosphere (released just prior by Beyond), this album is heavy on the synthetic textures, with bleeps, bloops, and otherwise treated electronics supporting a barrage of abstract, mostly breakbeat machine-born percussion.
	www.artistdirect.com /nad/store/artist/album/0,,242920,00.html (289 words)

	Deep Space Network Faces Major Crunch (Site not responding. Last check: 2007-10-21)
		During that time, a regular fleet of American, European and Japanese spacecraft will all be performing critical maneuvers, placing an unprecedented burden on the Deep Space Network (DSN) of antennas.
		As a result, demand could peak at upward of 300 percent of the network’s capacity, said Gael Squibb, director of the telecommunications and mission operations directorate at NASA’s Jet Propulsion Laboratory (JPL) that oversees the DSN.
		Network planners have requested that individual missions winnow down the number of hours they might need.
	www.space.com /news/spaceagencies/dsn_crunch_001204.html (625 words)

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