NDLI: Gravsat/geopause covariance analysis including geopotential aliasing

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Gravsat/geopause covariance analysis including geopotential aliasing

Content Provider	NASA Technical Reports Server (NTRS)
Author	Koch, D. W.
Copyright Year	1975
Description	A conventional covariance analysis for the GRAVSAT/GEOPAUSE mission is described in which the uncertainties of approximately 200 parameters, including the geopotential coefficients to degree and order 12, are estimated over three different tracking intervals. The estimated orbital uncertainties for both GRAVSAT and GEOPAUSE reach levels more accurate than presently available. The adjusted measurement bias errors approach the mission goal. Survey errors in the low centimeter range are achieved after ten days of tracking. The ability of the mission to obtain accuracies of geopotential terms to (12, 12) one to two orders of magnitude superior to present accuracy levels is clearly shown. A unique feature of this report is that the aliasing structure of this (12, 12) field is examined. It is shown that uncertainties for unadjusted terms to (12, 12) still exert a degrading effect upon the adjusted error of an arbitrarily selected term of lower degree and order. Finally, the distribution of the aliasing from the unestimated uncertainty of a particular high degree and order geopotential term upon the errors of all remaining adjusted terms is listed in detail.
File Size	11154170
Page Count	27
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19760010597
Archival Resource Key	ark:/13960/t6062bf26
Language	English
Publisher Date	1975-10-01
Access Restriction	Open
Subject Keyword	Geophysics Celestial Geodesy Satellite Observation Covariance Geoids Geopotential Satellite Tracking Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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