TY - GEN
T1 - Autonomous antenna pointing under the impact of unpredictable platform movement
AU - Pietras, Markus
AU - Walter, Ulrich
AU - Schmidt, Holger
PY - 2009
Y1 - 2009
N2 - Due to the interactive manner of real-time Teleoperation in low earth orbits, autonomic pointing becomes a challenging issue as the rapidly changing platform motion is not predictable for the whole operation period. Hence antenna trajectories cannot be calculated beforehand. To meet the high requirements of future missions like on-orbit servicing and interactive earth observation, technologies for real-time communication between low earth orbit spacecrafts and geostationary data relay satellites are being developed at the Institute of Astronautics. One of these technologies is a compact intersatellite antenna system with high precision, two axis pointing mechanism enabling long access periods via Geostationary Data Relay Satellite (DRS). A detailed dynamic simulation of the coupled dynamics between platform and antenna system was used to analyze and optimize control methods. This paper presents the simulation environment and discusses control methods and simulation results for highly autonomous antenna pointing under the impact of unpredictable platform motion and rapidly changing spacecraft geometries.
AB - Due to the interactive manner of real-time Teleoperation in low earth orbits, autonomic pointing becomes a challenging issue as the rapidly changing platform motion is not predictable for the whole operation period. Hence antenna trajectories cannot be calculated beforehand. To meet the high requirements of future missions like on-orbit servicing and interactive earth observation, technologies for real-time communication between low earth orbit spacecrafts and geostationary data relay satellites are being developed at the Institute of Astronautics. One of these technologies is a compact intersatellite antenna system with high precision, two axis pointing mechanism enabling long access periods via Geostationary Data Relay Satellite (DRS). A detailed dynamic simulation of the coupled dynamics between platform and antenna system was used to analyze and optimize control methods. This paper presents the simulation environment and discusses control methods and simulation results for highly autonomous antenna pointing under the impact of unpredictable platform motion and rapidly changing spacecraft geometries.
UR - http://www.scopus.com/inward/record.url?scp=77953561642&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:77953561642
SN - 9781615679089
T3 - 60th International Astronautical Congress 2009, IAC 2009
SP - 2986
EP - 2993
BT - 60th International Astronautical Congress 2009, IAC 2009
T2 - 60th International Astronautical Congress 2009, IAC 2009
Y2 - 12 October 2009 through 16 October 2009
ER -