Centroiding accuracy of infrared Earth images mitigating impact of blurring and Earth non-uniformity

Y. Chen; G. G. Ortiz; H. Hemmati; S. Lee

doi:10.1117/12.660269

1 March 2006 Centroiding accuracy of infrared Earth images mitigating impact of blurring and Earth non-uniformity

Y. Chen, G. G. Ortiz, H. Hemmati, S. Lee

Proceedings Volume 6105, Free-Space Laser Communication Technologies XVIII; 61050E (2006) https://doi.org/10.1117/12.660269
Event: Lasers and Applications in Science and Engineering, 2006, San Jose, California, United States

Abstract

Infrared (IR) Earth thermal image tracking has potential to enable optical communications throughout the solar system and is a promising alternative to traditionally proposed laser beacon tracking. Image blurring due to finite receiver aperture size introduces distortions to IR Earth image in the presence of Earth's non-uniform emissivity and reduces the centroiding accuracy in identifying the center of the Earth. The impact is largest in the 0.5 to 2 AU range. We demonstrate that a deconvolution algorithm can mitigate the effect of blurring associated with IR Earth non-uniformity and improve centroiding edge detection accuracy.

Citation Download Citation

Y. Chen, G. G. Ortiz, H. Hemmati, and S. Lee "Centroiding accuracy of infrared Earth images mitigating impact of blurring and Earth non-uniformity", Proc. SPIE 6105, Free-Space Laser Communication Technologies XVIII, 61050E (1 March 2006); https://doi.org/10.1117/12.660269

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