Engineering topics
Publications and source records attributed to Frauenholz, R..
The baseline scenario for the Mars 2003/2005 Sample Return Mission utilizes Mars orbit rendezvous to retrieve two orbiting sample canisters containing Martian surface material.
The TOPEX/POSEIDON orbit maintenance strategy was changed following launch to include the effects of observed unmodeled, and hence anomalous, along-track accelerations.
The TOPES/POSEIDON satellite is maintained in a nearly circular, frozen orbit at an altitude of =1336 km. and an inclination of i = 66.4, which provides an exact repeat ground track every 127 revolutions and overflies two altimetry verifications sites.