Areosynchronous orbit: Difference between revisions
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The [[Orbital elements|orbital altitude]] required to maintain an areosynchonous orbit is approximately {{convert|17000|km}}. If a satellite in areosynchonous orbit were to be used as a [[Communication link|communication relay link]], it "would experience communications ranges of {{convert|17000|to|20000|km}}" to various points on the visible Martian surface.<ref name=jpl20011115> |
The [[Orbital elements|orbital altitude]] required to maintain an areosynchonous orbit is approximately {{convert|17000|km}}. If a satellite in areosynchonous orbit were to be used as a [[Communication link|communication relay link]], it "would experience communications ranges of {{convert|17000|to|20000|km}}" to various points on the visible Martian surface.<ref name=jpl20011115> |
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{{cite journal |last=Lay|first=N. |author2=C. Cheetum|author3=H. Mojaradi|author4=J. Neal |title=Developing Low-Power Transceiver Technologies for In Situ Communication Applications |journal=IPN Progress Report 42-147 |date=15 November 2001 |volume=42 |issue=147 |pages=22 |url=http://www.cwc.oulu.fi/~carlos/WSNPapers/LA01.pdf |accessdate=2012-02-09 }}</ref> |
{{cite journal |last=Lay |first=N. |author2=C. Cheetum |author3=H. Mojaradi |author4=J. Neal |title=Developing Low-Power Transceiver Technologies for In Situ Communication Applications |journal=IPN Progress Report 42-147 |date=15 November 2001 |volume=42 |issue=147 |pages=22 |url=http://www.cwc.oulu.fi/~carlos/WSNPapers/LA01.pdf |accessdate=2012-02-09 |deadurl=yes |archiveurl=https://web.archive.org/web/20160304001744/http://www.cwc.oulu.fi/~carlos/WSNPapers/LA01.pdf |archivedate=4 March 2016 |df= }}</ref> |
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An areosynchronous orbit that is equatorial (AEO) (in the same plane as the [[equator]] of Mars), circular, and [[Retrograde motion|prograde]] (rotating about Mars's axis in the same direction as the planet's surface) is known as an [[areostationary orbit]] (AEO). To an observer on the surface of Mars, the position of a satellite in AEO would appear to be fixed in a constant position in the sky. The AEO is analogous to a [[geostationary orbit]] (GEO) about Earth.{{citation needed|date=November 2011}} |
An areosynchronous orbit that is equatorial (AEO) (in the same plane as the [[equator]] of Mars), circular, and [[Retrograde motion|prograde]] (rotating about Mars's axis in the same direction as the planet's surface) is known as an [[areostationary orbit]] (AEO). To an observer on the surface of Mars, the position of a satellite in AEO would appear to be fixed in a constant position in the sky. The AEO is analogous to a [[geostationary orbit]] (GEO) about Earth.{{citation needed|date=November 2011}} |
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Revision as of 08:02, 23 January 2018
Areosynchronous orbits (ASO) are a class of synchronous orbits for artificial satellites around the planet Mars. As with all synchronous orbits, an areosynchronous orbit has an orbital period equal in length to Mars's sidereal day. A satellite in areosynchronous orbit does not necessarily maintain a fixed position in the sky as seen by an observer on the surface of Mars; however, such a satellite will return to the same apparent position every Martian day.
The orbital altitude required to maintain an areosynchonous orbit is approximately 17,000 kilometres (11,000 mi). If a satellite in areosynchonous orbit were to be used as a communication relay link, it "would experience communications ranges of 17,000 to 20,000 kilometres (11,000 to 12,000 mi)" to various points on the visible Martian surface.[1]
An areosynchronous orbit that is equatorial (AEO) (in the same plane as the equator of Mars), circular, and prograde (rotating about Mars's axis in the same direction as the planet's surface) is known as an areostationary orbit (AEO). To an observer on the surface of Mars, the position of a satellite in AEO would appear to be fixed in a constant position in the sky. The AEO is analogous to a geostationary orbit (GEO) about Earth.[citation needed]
Although no satellites currently occupy areosynchronous or areostationary orbits, some scientists[who?] foresee a future telecommunications network for the exploration of Mars.{1}
See also
References
- ^
Lay, N.; C. Cheetum; H. Mojaradi; J. Neal (15 November 2001). "Developing Low-Power Transceiver Technologies for In Situ Communication Applications" (PDF). IPN Progress Report 42-147. 42 (147): 22. Archived from the original (PDF) on 4 March 2016. Retrieved 2012-02-09.
{{cite journal}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help)
External links
- Mars Network - Marsats - NASA site devoted to future communications infrastructure for Mars exploration
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 | This Mars spacecraft- or satellite-related article is a stub. You can help Wikipedia by expanding it. |
- ^ AlAA 89-0516 Conceptual Design of a Communications System for Mars Exploration Missions