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Chinese Optics Letters

Chinese Optics Letters


  • Vol. 4, Iss. 7 — Jul. 10, 2006
  • pp: 382–385

Tracking speckle displacement by double Kalman filtering

Donghui Li and Li Guo  »View Author Affiliations

Chinese Optics Letters, Vol. 4, Issue 7, pp. 382-385 (2006)

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A tracking technique using two sequentially-connected Kalman filter for tracking laser speckle displacement is presented. One Kalman filter tracks temporal speckle displacement, while another Kalman filter tracks spatial speckle displacement. The temporal Kalman filter provides a prior for the spatial Kalman filter, and the spatial Kalman filter provides measurements for the temporal Kalman filter. The contribution of a prior to estimations of the spatial Kalman filter is analyzed. An optical analysis system was set up to verify the double-Kalman-filter tracker's ability of tracking laser speckle's constant displacement.

© 2006 Chinese Optics Letters

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(120.3940) Instrumentation, measurement, and metrology : Metrology

Donghui Li and Li Guo, "Tracking speckle displacement by double Kalman filtering," Chin. Opt. Lett. 4, 382-385 (2006)

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