The two GRACE (Gravity Recovery and Climate Experiment) spacecraft were launched into a near polar circular orbit around the earth in March of 2002. The two spacecraft serve as test masses to measure the Earth's gravitational field.
Relative time and frequency alignment between two low Earth orbiters, GRACE
Frequency Control Symposium
2003-05-05
Aufsatz (Konferenz)
Keine Angabe
Englisch
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