The Space Interferometry Mission's System testbed-3 has recently integrated its precision support structure and spacecraft bus, or "backpack", on a pseudo free-free 0.5 Hz passive isolation system. The precision support structure holds a 3-baseline stellar interferometer instrument. The architecture of the instrument is based on the current SIM flight system design, and its main purpose is to demonstrate nanometer class fringe stabilization using the path length feed forward technique. This paper briefly describes the nanometer-class metrology system used in this testbed to estimate the length and orientation of the science baseline vector, which cannot be measured directly. The focus is on the mathematical inversion problem that results and its solution.
Space Interferometry Mission System testbed-3: external metrology inversion
2004 IEEE Aerospace Conference Proceedings (IEEE Cat. No.04TH8720) ; 3 ; 2115-2121 Vol.3
2004-01-01
359536 byte
Conference paper
Electronic Resource
English
6.0802 Space Interferometry Mission System Testbed-3: External Metrology Inversion
British Library Conference Proceedings | 2004
|