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Proceedings Paper

Enhanced precision pointing jitter suppression system
Author(s): Jerold P. Gilmore; Michael F. Luniewicz; Darryl Sargent
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Paper Abstract

Space based defense systems, such as a Space Based Laser (SBL), and space based surveillance systems share a common objective: extremely high resolution Line of Sight (LOS) target imaging. In order to achieve the mission objectives, their beam control subsystem must provide precise LOS pointing and tracking capabilities with suppression of LOS jitter. Draper Laboratory has developed concepts and instrumentation that address these needs based upon a stabilized inertial platform mechanization that holds a collimated light source, called the Inertial Pseudo Star Reference Unit (IPSRU). This paper describes the original IPSRU design and a design concept for a new High Performance version of the IPSRU system (HP-IPSRU) that meet the jitter stabilization needs of the SBL. The IPSRU provides an inertially stabilized optical probe beam that provides a precise pointing and tracking reference with nanoradian jitter performance. The IPSRU serves as a master reference for stabilizing imaging and weapon system pointing and tracking. This paper describes the IPSRU system, its measured error allocation and integrated performance. It presents the error budget required to achieving the 5 nrad rms jitter stabilization performance projected to be necessary for an operational Space Based Laser system. A conceptual design for the HP-IPSRU is presented.

Paper Details

Date Published: 4 June 2002
PDF: 12 pages
Proc. SPIE 4632, Laser and Beam Control Technologies, (4 June 2002); doi: 10.1117/12.469751
Show Author Affiliations
Jerold P. Gilmore, The Charles Stark Draper Lab., Inc. (United States)
Michael F. Luniewicz, The Charles Stark Draper Lab., Inc. (United States)
Darryl Sargent, The Charles Stark Draper Lab., Inc. (United States)

Published in SPIE Proceedings Vol. 4632:
Laser and Beam Control Technologies
Santanu Basu; James F. Riker, Editor(s)

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