The determination of the Mars-centered ephemerides of the Viking Orbiters and positions of the Landers from two way Doppler and range data is described. An overview of mission satellite orbit determination functions and methods is given. Topics covered include: postmaneuver orbit convergence, local orbit knowledge accuracies, the effects of interplanetary media, use of constrained solutions, and solving through trim burns. Procedure and results relevant to the determination of the planet gravity field are included. Results relative to sensing Mars' gravity field during the extended mission are presented along with a discussion of the Phobos Flyby Experiment conducted during February 1977.
Satellite orbit determination
1979-11-15
Miscellaneous
No indication
English
NTRS | 1973
|Viking satellite orbit determination
NTRS | 1977
|Viking Satellite Orbit Determination
AIAA | 1978
|Viking satellite orbit determination
AIAA | 1977
|Satellite-to-satellite tracking orbit determination
AIAA | 1978
|