High-precision radiometric tracking for planetary approach and encounter in the inner solar system

Details High-precision radiometric tracking for planetary approach and encounter in the inner solar system High-precision radiometric tracking for planetary approach and encounter in the inner solar system

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989tdar.nasa...21c&link_type=abstract

In its The Telecommunications and Data Acquisition Report p 21-46 (SEE N89-27871 22-32)

Computer Science

Performance

Accuracy, Approach, Covariance, Doppler Navigation, Global Positioning System, Ground Stations, Interplanetary Navigation, Radiometers, Tracking (Position), Very Long Base Interferometry, Data Processing, Errors, Mars Surface, Orbits, Roving Vehicles, Trajectories

Scientific paper

The benefits of improved radiometric tracking data have been studied for planetary approach within the inner Solar System using the Mars Rover Sample Return trajectory as a model. It was found that the benefit of improved data to approach and encounter navigation was highly dependent on the a priori uncertainties assumed for several non-estimated parameters, including those for frame-tie, Earth orientation, troposphere delay, and station locations. With these errors at their current levels, navigational performance was found to be insensitive to enhancements in data accuracy. However, when expected improvements in these errors are modeled, performance with current-accuracy data significantly improves, with substantial further improvements possible with enhancements in data accuracy.

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