Abstract Efficient storage and quick access to covariance data are important aspects of orbit catalog maintenance and conjunction analysis (CA). The catalog and CA access and storage requirements do not currently accommodate running a complete estimation process whenever orbit state and covariance are requested at some time. Instead, ephemeris and reduced covariance data are recorded at discrete times. Covariance interpolation from tabulated data must preserve positive definiteness and evolve covariance similar to the estimation process. This paper describes a new covariance interpolation method which blends approximate covariance propagations anchored at the end points of the interpolation interval to produce accurate physically meaningful covariance.
Efficient Covariance Interpolation Using Blending of Approximate Covariance Propagations
The Journal of the Astronautical Sciences ; 61 , 1 ; 107-132
01.03.2014
26 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Efficient Covariance Interpolation Using Blending of Approximate Covariance Propagations
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