Citation
Abstract
The Mariner 9 spacecraft was simultaneously tracked by the Echo Deep Space Station in the Goldstone Deep Space Communications Complex and Woomera Deep Space Station (no longer operational) during the month and a half prior to Mars encounter. The doppler data obtained were generated using hydrogen masers in the Frequency and Timing System. The benefits gained by tracking with two stations simultaneously and the difficulties encountered in processing the data are described. The results indicate that it is necessary to difference the two-way and three-way doppler explicitly if batch filtering is to be employed when there is significant process noise related to the spacecraft. The results, though promising, are not as conclusive as might be hoped for due to the limited amount of data.
Details
- Volume
- 42-20
- Published
- April 15, 1974
- Pages
- 27–40
- File Size
- 1.1 MB