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Proceedings Paper

Line-of-sight kinematics and corrections for fast-steering mirrors used in precision pointing and tracking systems
Author(s): J. M. Hilkert; Gavin Kanga; K. Kinnear
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Paper Abstract

Fast steering mirrors, or FSMs, have been used for several decades to enhance or augment the performance of electrooptical imaging and beam-steering systems in applications such as astronomy, laser communications and military targeting and surveillance systems. FSMs are high-precision, high-bandwidth electro-mechanical mechanisms used to deflect a mirror over a small angular displacement relative to the base it is mounted on which is typically a stabilized gimbal or other primary pointing device. Although the equations describing the line-of-sight kinematics derive entirely from the simple plane-mirror law of reflection, they are non-linear and axis-coupled and these effects increase as the FSM angular displacement increases. These inherent non-linearities and axis-coupling effects can contribute to pointing errors in certain modes of operation. The relevant kinematic equations presented in this paper can be used to assess the magnitude of the errors for a given application and make corrections as necessary.

Paper Details

Date Published: 9 June 2014
PDF: 15 pages
Proc. SPIE 9076, Airborne Intelligence, Surveillance, Reconnaissance (ISR) Systems and Applications XI, 90760F (9 June 2014); doi: 10.1117/12.2049857
Show Author Affiliations
J. M. Hilkert, Univ. of Texas at Dallas (United States)
Gavin Kanga, Lockheed Martin Missiles and Fire Control (United States)
K. Kinnear, Lockheed Martin Missiles and Fire Control (United States)

Published in SPIE Proceedings Vol. 9076:
Airborne Intelligence, Surveillance, Reconnaissance (ISR) Systems and Applications XI
Daniel J. Henry; Davis A. Lange; Dale Linne von Berg; S. Danny Rajan; Thomas J. Walls; Darrell L. Young, Editor(s)

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