Computer Science – Performance
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984tdar.nasa...35m&link_type=abstract
In its The Telecommunications and Data Acquisition Rept. p 35-46 (SEE N85-13980 05-32)
Computer Science
Performance
Deep Space Network, Orbital Position Estimation, Very Long Base Interferometry, Voyager Project, Angular Velocity, Data Management, Doppler Radar, Faraday Effect, Spacecraft Trajectories
Scientific paper
Project Voyager radio metric data are used to evaluate the orbit determination utilities of several data strategies during spacecraft interplanetary cruise. Benchmark performance is established with an operational data strategy of conventional coherent Doppler, coherent range, and explicitly differenced range data from two intercontinental baselines to ameliorate the low declination singularity of the Doppler data. Employing a Voyager operations trajectory as a reference, the performance of the operational data strategy is compared to the performances of data strategies using differential VLBI delay data (spacecraft delay minus quasar delay) in combination with the aforementioned conventional data types. The comparison of strategy performances indicates that high accuracy cruise orbit determination can be achieved with a data strategy employing differential VLBI delay data, where the quantity of coherent radio metric data was reduced by over 95% with a concurrent 90% reduction in the DSN time allocated to radio metric data acquisition.
Moultrie B.
Taylor T. H.
Wolff P. J.
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