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Position-Sensitive Detector Applications Based on Active Illumination of a Cooperative Target

  • Anssi J. Mäkynen
  • Juha T. Kostamovaara
  • Risto A. Myllylä
Chapter
Part of the Microprocessor-Based and Intelligent Systems Engineering book series (ISCA, volume 9)

Abstract

Position-sensitive detector applications based on active illumination of a cooperative target are proposed. The sensors include an optical transmitter, a cooperative target and an optical receiver. The transmitter illuminates the target and the reflected light is focused on a position-sensitive detector by the receiver optics. The proposed applications include sensors for electronic navigation, 3D shape measurement and shooting simulation and alignment measurement. A method for target-background contrast enhancement is also presented, based on polarization filtering using infra-red polarizers in front of the optics and a quarter wave plate in front of the reflector. The method improves contrast with both diffuse and specular backgrounds, and reduces the background related errors.

Keywords

Quarter Wave Plate Laser Tracking Receiver Optic Laser Rangefinder Alignment Measurement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 1991

Authors and Affiliations

  • Anssi J. Mäkynen
    • 1
  • Juha T. Kostamovaara
    • 1
  • Risto A. Myllylä
    • 2
  1. 1.University of OuluElectronics laboratory LinnanmaaOuluFinland
  2. 2.Technical Research Centre of FinlandElectronics LaboratoryOuluFinland

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