Title :
Confluence of navigation, communication, and control in distributed spacecraft systems
Author :
Stadter, P.A. ; Chacos, A.A. ; Heins, R.J. ; Moore, G.T. ; Olsen, E.A. ; Asher, M.S. ; Bristow, J.O.
Author_Institution :
Appl. Phys. Lab., Johns Hopkins Univ., Laurel, MD, USA
fDate :
5/1/2002 12:00:00 AM
Abstract :
This research details the development of technologies and methodologies that enable distributed spacecraft systems by supporting integrated navigation, communication, and control. Operating at the confluence of these critical functions produces capabilities needed to realize the promise of distributed spacecraft systems, including improved performance and robustness relative to monolithic space systems. Navigation supports science data association and data alignment for distributed aperture sensing, multipoint observation, and co-observation of target regions. Communication enables autonomous distributed science data processing and information exchange among space assets. Both navigation and communication provide essential input to control methods for coordinating distributed autonomous assets at the interspacecraft system level and the intraspacecraft affector subsystem level. A technology solution to implement these capabilities, the Crosslink Transceiver, is also described. The Crosslink Transceiver provides navigation and communication capability that can be integrated into a developing autonomous command and control methodology for distributed spacecraft systems. A small satellite implementation of the Crosslink Transceiver design is detailed and its ability to support broad distributed spacecraft mission classes is described
Keywords :
Global Positioning System; aerospace control; artificial satellites; closed loop systems; decentralised control; discrete event systems; distributed control; distributed sensors; sensor fusion; transceivers; GPS constellation; autonomous distributed processing; closed loop control; critical functions; crosslink transceiver; data alignment; decentralized systems; deep space; discrete event system; distributed aperture sensing; distributed control theory; distributed sensing; distributed spacecraft systems; enabling technology; formation flying systems; improved performance; improved robustness; information exchange; integrated navigation-communication-control; interspacecraft communication; intraspacecraft affector subsystem level; multiple assets; multipoint observation; science data association; small satellite implementation; space assets; Apertures; Communication system control; Control systems; Data processing; Distributed control; Navigation; Robustness; Space technology; Space vehicles; Transceivers;
Journal_Title :
Aerospace and Electronic Systems Magazine, IEEE