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Double-wedge prism imaging tracking device based on the adaptive boresight adjustment principle.

Anhu Li1, Shengze Zhong1, Xingsheng Liu1

  • 1School of Mechanical Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China.

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|March 6, 2019
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Summary

A novel self-adapting double-wedge prism system offers precise target tracking for both near and far fields. This boresight adjustment technology achieves high accuracy, minimizing angular deviations for advanced imaging detection.

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Area of Science:

  • Optical Engineering
  • Imaging Systems
  • Precision Measurement

Background:

  • Double-wedge prism devices are recognized for high precision and anti-disturbance in imaging detection.
  • Existing systems may have limitations in adapting to both near-field and far-field target tracking scenarios.

Purpose of the Study:

  • To propose a self-adapting double-wedge prism boresight adjustment principle for versatile target tracking.
  • To design and validate an adaptive variable boresight imaging tracking device.

Main Methods:

  • Development of a self-adaptation principle for double-wedge prism boresight adjustment.
  • Design of a specific adaptive variable boresight imaging tracking device.
  • Establishment of a tracking error model, followed by dynamic simulation, error evaluation, and sensitivity analysis.

Main Results:

  • Experimental validation demonstrated pitch and azimuth angle deviations below 6 arcminutes.
  • The proposed system achieves high-precision boresight adjustment and tracking capabilities.
  • Elimination of the blind zone was demonstrated by incorporating a third wedge prism.

Conclusions:

  • The self-adapting double-wedge prism principle enables precise boresight adjustment for diverse target tracking applications.
  • The developed adaptive device meets high-precision requirements, overcoming limitations of previous systems.
  • Further enhancements, such as adding a third wedge prism, can eliminate blind zones for improved performance.