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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 12 — Apr. 20, 2013
  • pp: 2849–2857

Motion control of the wedge prisms in Risley-prism-based beam steering system for precise target tracking

Yuan Zhou, Yafei Lu, Mo Hei, Guangcan Liu, and Dapeng Fan  »View Author Affiliations


Applied Optics, Vol. 52, Issue 12, pp. 2849-2857 (2013)
http://dx.doi.org/10.1364/AO.52.002849


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Abstract

Two exact inverse solutions of Risley prisms have been given by previous authors, based on which we calculate the gradients of the scan field that open a way to investigate the nonlinear relationship between the slewing rate of the beam and the required angular velocities of the two wedge prisms in the Risley-prism-based beam steering system for target tracking. The limited regions and singularity point at the center and the edge of the field of regard are discussed. It is found that the maximum required rotational velocities of the two prisms for target tracking are nearly the same and are dependent on the altitude angle. The central limited region is almost independent of the prism parameters. The control singularity at the crossing center path can be avoided by switching the two solutions.

© 2013 Optical Society of America

OCIS Codes
(080.0080) Geometric optics : Geometric optics
(080.2720) Geometric optics : Mathematical methods (general)
(220.2740) Optical design and fabrication : Geometric optical design
(230.5480) Optical devices : Prisms
(280.1100) Remote sensing and sensors : Aerosol detection
(120.4880) Instrumentation, measurement, and metrology : Optomechanics

ToC Category:
Optical Devices

History
Original Manuscript: January 3, 2013
Revised Manuscript: March 22, 2013
Manuscript Accepted: March 23, 2013
Published: April 18, 2013

Citation
Yuan Zhou, Yafei Lu, Mo Hei, Guangcan Liu, and Dapeng Fan, "Motion control of the wedge prisms in Risley-prism-based beam steering system for precise target tracking," Appl. Opt. 52, 2849-2857 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-12-2849

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