Deep Space Network - Revision history

Pb at 05:54, 20 December 2018

2018-12-20T05:54:29Z

← Older revision		Revision as of 06:54, 20 December 2018
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	This network may be used for an [[internet\|interplanetary internet link]].		This network may be used for an [[internet\|interplanetary internet link]].

			[[File:CCSDS_DDOR_Observation_Geometry.png\|right\|thumb\|320px\| Geometry of Delta-DOR for navigation]]

	==Use for Communication==		==Use for Communication==

Pb: /* Use for Navigation */

2018-12-20T05:49:21Z

Use for Navigation

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	==Use for Navigation==		==Use for Navigation==
	The DSN can provide ranging and doppler information for use in orbit determination of spacecraft. Long two-way doppler tracking is commonly used.<ref>https://descanso.jpl.nasa.gov/monograph/series1/Descanso1_C03.pdf</ref>		The DSN can provide ranging and doppler information for use in orbit determination of spacecraft. Long two-way doppler tracking is commonly used.<ref>https://descanso.jpl.nasa.gov/monograph/series1/Descanso1_C03.pdf</ref>

			Delta-DOR is a navigation technique that is similar to Very Long Baseline Interferometry. Delta-DOR requires two base stations separated by a mile or two, a quasar, and a target spacecraft which must emit several tones spanning a few MHz. From this, angular measurement is obtained. <ref>https://public.ccsds.org/Pubs/500x1g1.pdf</ref>

	==Downtime==		==Downtime==

Jburk at 18:29, 17 December 2018

2018-12-17T18:29:12Z

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	{{stub}}		{{stub}}

	[[category:~~communication]][[category:Mission_Control_Centers]][[Category:Technology~~]]		[[category:Communication]]

Pb: /* Alternatives */

2018-10-21T16:32:25Z

Alternatives

← Older revision		Revision as of 17:32, 21 October 2018
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	China has several large antennas. Most are located in mainland China, but a new groundstation was recently constructed in Argentina. The network was used to track Chang'e 2, which had a mission profile similar to NASA's Clementine mission, with operations in cis-lunar space followed by operations around an asteroid.		China has several large antennas. Most are located in mainland China, but a new groundstation was recently constructed in Argentina. The network was used to track Chang'e 2, which had a mission profile similar to NASA's Clementine mission, with operations in cis-lunar space followed by operations around an asteroid.

	The American company Atlas Space Operations is building a commercial capability which they claim will be equivalent to one of the DSN's 70 meter dishes. Atlas LINKS (TM) will be an array of small antennas, not a large ~~beam waveguide~~ antenna like those the DSN utilizes.		The American company Atlas Space Operations is building a commercial capability which they claim will be equivalent to one of the DSN's 70 meter dishes. Atlas LINKS (TM) will be an array of small antennas, not a large aperture antenna like those the DSN utilizes.


	==Open issues==		==Open issues==

Pb: updating data rate

2018-10-21T14:27:49Z

updating data rate

← Older revision		Revision as of 15:27, 21 October 2018
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	==Use for Communication==		==Use for Communication==
	Typically, one or more of the 34 meter diameter antennas is used to communicate with spacecraft at Mars. The data rate of the downlink from Mars can be anywhere from a few bits/second to on the order of ~~a hundred kpbs~~. Most missions use the DSN at X-band, but a small number of missions are using S-band or Ka-band.		Typically, one or more of the 34 meter diameter antennas is used to communicate with spacecraft at Mars. The data rate of the downlink from Mars can be anywhere from a few bits/second to on the order of 1 Mpbs. Most missions use the DSN at X-band, but a small number of missions are using S-band or Ka-band.

	==Use for Navigation==		==Use for Navigation==

Pb: expanding with some details

2018-10-21T14:01:52Z

expanding with some details

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-The '''Deep Space Network''' (DSN) is an international network of antennas located on [[Earth]] and dedicated to the communication with interplanetary missions and astronomical radio observations. Currently, there are three sites based approximately 120&deg; apart in the Mojave Desert, California (USA), Madrid (Spain) and Canberra (Australia). The dispersion of antennas allow mission controllers to keep constant watch on all interplanetary missions regardless on Earth's rotation. There is only a small gap in time for the communication with [[Mars]] when the planets are in [[conjunction]].
+The '''Deep Space Network''' (DSN) is an international network of antennas owned and operated by NASA located on [[Earth]] and dedicated to the communication with interplanetary missions and astronomical radio observations. Currently, there are three sites based approximately 120&deg; apart in the Mojave Desert, California (USA), Madrid (Spain) and Canberra (Australia). The dispersion of antennas allow mission controllers to keep constant watch on all interplanetary missions regardless on Earth's rotation.
 This network may be used for an [[internet|interplanetary internet link]].
 ==Open issues==

Rfc: gap in time, link to Internet

2007-12-03T07:57:14Z

gap in time, link to Internet

← Older revision		Revision as of 08:57, 3 December 2007
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	The '''Deep Space Network''' (DSN) is an international network of antennas dedicated to the communication with interplanetary missions and astronomical radio observations. Currently, there are three sites based approximately 120° apart in the Mojave Desert, California (USA), Madrid (Spain) and Canberra (Australia). The dispersion of antennas allow mission controllers to keep constant watch on all interplanetary missions regardless on Earth's rotation.		The '''Deep Space Network''' (DSN) is an international network of antennas located on [[Earth]] and dedicated to the communication with interplanetary missions and astronomical radio observations. Currently, there are three sites based approximately 120° apart in the Mojave Desert, California (USA), Madrid (Spain) and Canberra (Australia). The dispersion of antennas allow mission controllers to keep constant watch on all interplanetary missions regardless on Earth's rotation. There is only a small gap in time for the communication with [[Mars]] when the planets are in [[conjunction]].

			This network may be used for an [[internet\|interplanetary internet link]].

			==Open issues==
			*How long is the gap and how often does it occur?

	==External links==		==External links==

Ioneill: adding bit about the DSN

2007-12-02T21:14:38Z

adding bit about the DSN

New page

The '''Deep Space Network''' (DSN) is an international network of antennas dedicated to the communication with interplanetary missions and astronomical radio observations. Currently, there are three sites based approximately 120° apart in the Mojave Desert, California (USA), Madrid (Spain) and Canberra (Australia). The dispersion of antennas allow mission controllers to keep constant watch on all interplanetary missions regardless on Earth's rotation.

==External links==
*[http://deepspace.jpl.nasa.gov/dsn/ NASA site for the DSN]

{{stub}}

[[category:communication]][[category:Mission_Control_Centers]][[Category:Technology]]