NDLI: Multi-spacecraft coherent doppler and ranging for interplanetary-navigation

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Multi-spacecraft coherent doppler and ranging for interplanetary-navigation

Content Provider	NASA Technical Reports Server (NTRS)
Author	Pollmeier, Vincent M.
Copyright Year	1995
Description	Future plans for planetary exploration currently include using multiple spacecraft to simultaneously explore one planet. This never before encountered situation places new demands on tracking systems used to support navigation. One possible solution to the problem of heavy ground resource conflicts is the use of multispacecraft coherent radio metric data, also known as, bent-pipe data. Analysis of the information content of these data types show that the information content of multi-spacecraft Doppler is dependent only on the frequency of the final downlink leg and is independent of the frequencies used on other legs. Numerical analysis shows that coherent bent-pipe data can provide significantly better capability to estimate the location of a lander on the surface of Mars than can direct lander to Earth radio metric data. However, this is complicated by difficulties in separating the effect of a lander position error from that of an orbiter position error for single passes of data.
File Size	416823
Page Count	10
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19950021365
Archival Resource Key	ark:/13960/t15n14v4b
Language	English
Publisher Date	1995-05-01
Access Restriction	Open
Subject Keyword	Space Communications, Spacecraft Communications, Command And Tracking Position Location Radio Navigation Interplanetary Navigation Doppler Effect Rangefinding Downlinking Radio Frequencies Numerical Analysis Viking Lander Spacecraft Mars Surface Space Exploration Position Errors Spacecraft Tracking Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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