Engineering topics
Shields, J.
Publications and source records attributed to Shields, J..
Precision guidance and control for formation flying spacecraft
The authors provide an overview of the challenges that must be overcome to fully realize the increased science returns that formations engender. The challenges are separated into six categories that span hardware, software and theory. The contribution of this paper is that it clearly delineates each category, listing detailed problems that must be solved.
Fringe tracking in the StarLight Formation Interferometer Testbed
StarLight, a NASA/JPL mission originally scheduled for launch in 2006, proposed to fly a two spacecraft visible light stellar interferometer. In this paper we present our status and review progress towards fringe tracking on a moving collector target.
Metrology sensor characterization and pointing control for the Formation Interferometer Testbed (FIT)
In this paper, the metrology pointing sensor of the Starlight ground instrument prototype is characterized and a siderostat pointing control loop is closed between two optical benches with a 10 meter separation.
Starlight pointing subsystem for the Formation Interferometer Testbed (FIT)
This paper shows a complete model of the FIT pointing system.