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Proceedings Paper

Line-of-sight stabilization: sensor blending
Author(s): Christopher J. Pettit; James A. Harrer
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Paper Abstract

The optical line-of-sight (LOS) system on a two body spe platform must be stabilized to sub-microradian levels in the presence of base disturbances to obtain blur free images. An example of a two body spacecraft has a telescope (cw beam expander) as the fore body and a sensor suite which can include an active tracking system on the aft body. An isolation system between the two bodies will keep the diswrbances generated in each from effecting the other. Such a system could be used for satellite communications, weather tracking systems, etc. The need for accurate control of angular motion is accomplished with stabilization and isolation piatforms and active control of structures and optics. This paper will discuss a method to isolate the LOS from the base motion of the space platform over a wide frequency range. This method includes a concept to blend inertial measuring sensors (IMS) that erate in different frequency ranges to produce an IMS sensor system that can measure base disturbances from DC to over 1000 Hz with minimum distortion. Experimental data from this blending technique will also be included in this report.

Paper Details

Date Published: 1 October 1990
PDF: 10 pages
Proc. SPIE 1303, Advances in Optical Structure Systems, (1 October 1990); doi: 10.1117/12.21518
Show Author Affiliations
Christopher J. Pettit, Martin Marietta Space Systems (United States)
James A. Harrer, Martin Marietta Space Systems (United States)

Published in SPIE Proceedings Vol. 1303:
Advances in Optical Structure Systems
John A. Breakwell; Victor L. Genberg; Gary C. Krumweide, Editor(s)

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