Determining spacecraft angular position with Delta VLBI - The Voyager demonstration

Details Determining spacecraft angular position with Delta VLBI - The Voyager demonstration Determining spacecraft angular position with Delta VLBI - The Voyager demonstration

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982asdy.confw....b&link_type=abstract

American Institute of Aeronautics and Astronautics and American Astronautical Society, Astrodynamics Conference, San Diego, CA,

Computer Science

Performance

1

Interplanetary Navigation, Spacecraft Position Indicators, Very Long Base Interferometry, Voyager 1 Spacecraft, Angular Resolution, Data Acquisition, Data Processing, Error Analysis, Rangefinding, Saturn Project, Voyager 2 Spacecraft

Scientific paper

A demonstration of a new VLBI-based radio metric data type for interplanetary navigation has been conducted using the Voyager spacecraft on their approach to Saturn. Pseudo-range measurements from stations on intercontinental baselines were employed, in conjunction with interferometric observations of quasars, to obtain a precise measure of the spacecraft angular position. In addition to its high accuracy this technique requires significantly less station time than conventional range and Doppler and can be used in a downlink only mode. The paper describes the data type, acquisition system, and processing procedures. Anticipated measurement accuracy is established by analysis of various system error sources. Results obtained from Voyager observations are given to show that the system performance is in accordance with expectations.

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