Image quality evaluation of space optical remote sensor with segmented mirror

Yan Wen; Ji-xiang Yan

doi:10.1117/12.791229

19 February 2008 Image quality evaluation of space optical remote sensor with segmented mirror

Yan Wen, Ji-xiang Yan

Proceedings Volume 6625, International Symposium on Photoelectronic Detection and Imaging 2007: Related Technologies and Applications; 66251R (2008) https://doi.org/10.1117/12.791229
Event: International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, 2007, Beijing, China

Abstract

The design of segmented mirror is an effective way to increase the resolution of space optical remote sensor. We analyze the gaps and piston that affecting the system imaging performance. The corresponding Point Spread Function (PSF), modulation transfer functions (MTF) and SR (Strehl Ratio) are presented. The General Image Quality Equation (GIQE) is used to Linking NIIRS to those effects to provide engineering the criteria for system performance. We show an example of how NIIRS is applied to measure the influence of these effects on system performance. In the example, the Δ NIIRS is computed by GIQE. Δ NIIRS is performed to measure small loss in image quality. When the Δ NIIRS is more than 0.2, the loss of image quality are non-negligible. The experiment show the NIIRS can provide a simple, yet powerful, tool for assessing and communicating image quality and sensor system requirements.

Citation Download Citation

Yan Wen and Ji-xiang Yan "Image quality evaluation of space optical remote sensor with segmented mirror", Proc. SPIE 6625, International Symposium on Photoelectronic Detection and Imaging 2007: Related Technologies and Applications, 66251R (19 February 2008); https://doi.org/10.1117/12.791229

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KEYWORDS

Image quality

Image segmentation

Modulation transfer functions

Point spread functions

Segmented mirrors

Sensors

Remote sensing

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