Image quality degradation analysis induced by satellite platform harmonic vibration

Bo Xue*, Xiaomei Chen, N. Guoqiang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Citations (Scopus)

Abstract

The paper discusses how different frequencies vibrations influence the image quality and limit resolution. The main module of image quality degradation is based on the physical optical imaging process. This model builds up the accurate relationship between image space and object space, and reproduces entire imaging process from time-space joint relation. In this experiment, fixed amplitude harmonic vibrations with frequencies between 1Hz to 2000Hz applied to the 2-Dimesion unit impulse function image and standard knife edge image. Then those degenerated images are analyzed to measure the PSF (Point Spread Function) and MTF (Modulation Transfer Function). As the result, with the increase of the ratio of Te to T0, the PSF and MTF become constringent. When the ratio of Te to T0 is greater than 10, the maximum of relative error of the PSFs is less than 5%. This experiment reveals that the very high frequency vibrations have almost the same effects to degenerate the image as the relative lower frequency vibrations, which means that the frequency is not as important as the vibration amplitude.

Original languageEnglish
Title of host publication2009 International Conference on Optical Instruments and Technology - Optoelectronic Imaging and Process Technology, OIT 2009
DOIs
Publication statusPublished - 2009
Event2009 International Conference on Optical Instruments and Technology, OIT 2009 - Shanghai, China
Duration: 19 Oct 200921 Oct 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7513
ISSN (Print)0277-786X

Conference

Conference2009 International Conference on Optical Instruments and Technology, OIT 2009
Country/TerritoryChina
CityShanghai
Period19/10/0921/10/09

Keywords

  • Image degeneration
  • Mtf analysis
  • Satellite vibration
  • Simulation

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Xue, B., Chen, X., & Guoqiang, N. (2009). Image quality degradation analysis induced by satellite platform harmonic vibration. In 2009 International Conference on Optical Instruments and Technology - Optoelectronic Imaging and Process Technology, OIT 2009 Article 75130N (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7513). https://doi.org/10.1117/12.837809