Enhanced orbit determination filter sensitivity analysis: Error budget development

Details Enhanced orbit determination filter sensitivity analysis: Error budget development Enhanced orbit determination filter sensitivity analysis: Error budget development

Feb 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994tdar.nasa...24e&link_type=abstract

In its The Telecommunications and Data Acquisition Report p 24-36 (SEE N94-29652 08-32)

Statistics

Computation

Error Analysis, Orbit Calculation, Reduced Order Filters, Space Navigation, Spacecraft Tracking, Data Reduction, Doppler Radar, Random Errors, Rangefinding, Superhigh Frequencies

Scientific paper

An error budget analysis is presented which quantifies the effects of different error sources in the orbit determination process when the enhanced orbit determination filter, recently developed, is used to reduce radio metric data. The enhanced filter strategy differs from more traditional filtering methods in that nearly all of the principal ground system calibration errors affecting the data are represented as filter parameters. Error budget computations were performed for a Mars Observer interplanetary cruise scenario for cases in which only X-band (8.4-GHz) Doppler data were used to determine the spacecraft's orbit, X-band ranging data were used exclusively, and a combined set in which the ranging data were used in addition to the Doppler data. In all three cases, the filter model was assumed to be a correct representation of the physical world. Random nongravitational accelerations were found to be the largest source of error contributing to the individual error budgets. Other significant contributors, depending on the data strategy used, were solar-radiation pressure coefficient uncertainty, random earth-orientation calibration errors, and Deep Space Network (DSN) station location uncertainty.

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