Abstract

Based on the analysis for the main elements of the total modulation transfer function (MTF) of imager on geostationary platform, the precise evaluation for its low spatial frequency spectrum has been achieved. Meanwhile, it is pointed out that the main cause of imagery spatial resolution lower than the designed value is the "slight defocus" of imager focal plane array (FPA). The validation method for visible imagery spatial resolution is proposed based on the analysis of defocused optical system model and edge-spread-function (ESF), the relative error is less than 7% after alleviating stray light effects. This method has been applied in the in-orbit ground testing of FY-2C geostationary meteorological satellite successfully.

© 2006 Chinese Optics Letters

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  10. S. Xu, Algorithm Programs Group in Common Use (second edn.) (in Chinese) (Tsinghua University Press, Beijing, 1996) pp.290-294.

2005 (3)

T.-K. Ji and Z.-M. Zhao, J. Remote Sensing (in Chinese) 9, 486 (2005).

Q. Guo, J.-M. Xu, and G.-L. Chen, J. Infrared Millim. Waves (in Chinese) 24, 39 (2005).

Q. Guo, J.-M. Xu, and W.-J. Zhang, International Journal of Remote Sensing 26, 2817 (2005).

2002 (1)

L. M. Mugnier and G. Le Besnerais, Proc. SPIE 4483, 185 (2002).

1998 (1)

J. J. Shea, Proc. SPIE 3439, 165 (1998).

1996 (1)

J. J. Shea, Proc. SPIE 2812, 221 (1996).

Besnerais, G. Le

L. M. Mugnier and G. Le Besnerais, Proc. SPIE 4483, 185 (2002).

Chen, G.-L.

Q. Guo, J.-M. Xu, and G.-L. Chen, J. Infrared Millim. Waves (in Chinese) 24, 39 (2005).

Guo, Q.

Q. Guo, J.-M. Xu, and G.-L. Chen, J. Infrared Millim. Waves (in Chinese) 24, 39 (2005).

Q. Guo, J.-M. Xu, and W.-J. Zhang, International Journal of Remote Sensing 26, 2817 (2005).

Ji, T.-K.

T.-K. Ji and Z.-M. Zhao, J. Remote Sensing (in Chinese) 9, 486 (2005).

Mugnier, L. M.

L. M. Mugnier and G. Le Besnerais, Proc. SPIE 4483, 185 (2002).

Shea, J. J.

J. J. Shea, Proc. SPIE 3439, 165 (1998).

J. J. Shea, Proc. SPIE 2812, 221 (1996).

Xu, J.-M.

Q. Guo, J.-M. Xu, and W.-J. Zhang, International Journal of Remote Sensing 26, 2817 (2005).

Q. Guo, J.-M. Xu, and G.-L. Chen, J. Infrared Millim. Waves (in Chinese) 24, 39 (2005).

Zhang, W.-J.

Q. Guo, J.-M. Xu, and W.-J. Zhang, International Journal of Remote Sensing 26, 2817 (2005).

Zhao, Z.-M.

T.-K. Ji and Z.-M. Zhao, J. Remote Sensing (in Chinese) 9, 486 (2005).

International Journal of Remote Sensing (1)

Q. Guo, J.-M. Xu, and W.-J. Zhang, International Journal of Remote Sensing 26, 2817 (2005).

J. Infrared Millim. Waves (in Chinese) (1)

Q. Guo, J.-M. Xu, and G.-L. Chen, J. Infrared Millim. Waves (in Chinese) 24, 39 (2005).

J. Remote Sensing (in Chinese) (1)

T.-K. Ji and Z.-M. Zhao, J. Remote Sensing (in Chinese) 9, 486 (2005).

Proc. SPIE (3)

J. J. Shea, Proc. SPIE 2812, 221 (1996).

J. J. Shea, Proc. SPIE 3439, 165 (1998).

L. M. Mugnier and G. Le Besnerais, Proc. SPIE 4483, 185 (2002).

Other (4)

S. C. Wu, P. K. Z. Cheng, S. Y. Lee, and A. M. Wu, in Proceedings of 25th ACRS'2004 PS-5.9, 1638 (2004).

H. H. Hopkins, in Proceedings of the Royal Society of London Series A 231, 91 (1955).

Q. Guo, Study on the real-time evaluation for the qualities of images of the geostationary meteorological satellites (in Chinese) Ph.D. Dissertation, Shanghai Institute of Technical Physics, C.A.S. (2003).

S. Xu, Algorithm Programs Group in Common Use (second edn.) (in Chinese) (Tsinghua University Press, Beijing, 1996) pp.290-294.

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