Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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A Mechanism Study of a HyperSpectral Image Sensor for Nadir and Slant Range Operation

직하방과 빗각 촬영 운용을 위한 초분광 영상센서 구동방식에 관한 연구

  • Lee, Kyeongyeon (The 3rd Research and Development Institute, Agency of Defense Development)
  • 이경연 (국방과학연구소 제3기술연구본부)
  • Received : 2019.05.03
  • Accepted : 2019.07.19
  • Published : 2019.08.05
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Abstract

General Hyperspectral Image Sensor acquires an image of line form such as a thin rectangle shape because of using 1D array Push Broom or Whisk Broom scanning method. A special mechanism is required for a Hyperspectral Image Sensor to operate for nadir and slant range. To design the mechanism, the characteristics of the flight motion and the overlap rate between consecutive frames were analyzed. Also, system requirements were proposed through modeling and simulation.

Keywords

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Fig. 1. 1D array push broom

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Fig. 2. Aircraft height(Case3)

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Fig. 3. Ground speed(Case 3)

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Fig. 4. Aircraft route and heading vector

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Fig. 5. Aircraft Angular_rate_Roll(Case1)

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Fig. 6. Aircraft Angular_rate_Pitch(Case3)

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Fig. 7. Aircraft Angular_rate_Yaw(Case1)

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Fig. 8. 3-Axis of aircraft and sensor

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Fig. 9. Footprint of nadir and slant

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Fig. 10. 4-corner coordinates

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Fig. 11. Overlap rate concept and parameters

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Fig. 12. Gimbal of Yaw-Pitch axis

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Fig. 13. Overlap rate results of 2-axis gimbal

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Fig. 14. Overlap rate results of 3-axis gimbal

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Fig. 15. Overlap rate @ 12.72 μrad(rms)

Table 1. Case study results

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References

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  2. Gerald C. Holst, "ElECTRO-OPTICAL IMAGING SYSTEM PERFORMANCE", SPIE PRESS
  3. S. Lee, “A Study on the Interior Orientation for Various Image Sensors,” Korean Society of Civil Engineers, Vol. 25, No. 3D, pp. 503-508, 2005.
  4. J. Park and S. Jung, “An Experimental Study on the Coordinates Tracker Realization for EOTS Slaved to the Radar of a Helicoter,” Journal of Control, Automation and Systems Engineering, Vol. 11, No. 4, pp. 369-377, April, 2005. https://doi.org/10.5302/J.ICROS.2005.11.4.369
  5. S. Lee, H. Park and J. Lee, "The Study for Performance of 2 Axis Gimbal Equipped with an Infrared Image Sensor," Conference on Information and Control Systems, pp. 232-233, 2015.