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Position determination of a lander and rover at Mars with Earth-based differential trackingThe presence of two or more landed or orbiting spacecraft at a planet provides the opportunity to perform extremely accurate Earth-based navigation by simultaneously acquiring Doppler data and either Same-Beam Interferometry (SBI) or ranging data. Covariance analyses were performed to investigate the accuracy with which lander and rover positions on the surface of Mars can be determined. Simultaneous acquisition of Doppler and ranging data from a lander and rover over two or more days enables determination of all components of their relative position to under 20 m. Acquiring one hour of Doppler and SBI enables three dimensional lander-rover relative position determination to better than 5 m. Twelve hours of Doppler and either SBI or ranging from a lander and a low circular or half synchronous circular Mars orbiter makes possible lander absolute position determination to tens of meters.
Document ID
19920015079
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kahn, R. D. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Folkner, W. M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Edwards, C. D. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Vijayaraghavan, A. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
September 6, 2013
Publication Date
February 15, 1992
Publication Information
Publication: The Telecommunications and Data Acquisition Report
Subject Category
Aircraft Communications And Navigation
Accession Number
92N24322
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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