PSF analysis on subaperture aberrations of optical synthetic aperture imaging system

Zhile Wang; Shuqing Zhang; Yanchao Jiang; Ling Hao; Lanqing Zhang

doi:10.1117/12.904731

5 December 2011 PSF analysis on subaperture aberrations of optical synthetic aperture imaging system

Zhile Wang, Shuqing Zhang, Yanchao Jiang, Ling Hao, Lanqing Zhang

Proceedings Volume 8197, 2011 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 81970W (2011) https://doi.org/10.1117/12.904731
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

Abstract

Based on the wave theory of aberrations, the Point Spread Functions (PSFs) of optical synthetic aperture imaging system disturbed by some aberrations, such as Piston error, Tilt error, spherical aberration, astigmatism, were analyzed. Additionally, the analytical expressions of the central value of the PSF (CVPSF) on Piston error and Tilt error were deduced, and were simulated by MATLAB. The results show that when one sub-aperture of an N identical sub-apertures synthetic array is disturbed by Piston error, the PSF fluctuates periodically. Furthermore, the PSF decreased by Piston error, spherical aberration or astigmatism can be significantly compensated by defocus. And CVPSF is improved from 0.60 to 0.93 for the spherical aberration after it is compensated by defocus.

Citation Download Citation

Zhile Wang, Shuqing Zhang, Yanchao Jiang, Ling Hao, and Lanqing Zhang "PSF analysis on subaperture aberrations of optical synthetic aperture imaging system", Proc. SPIE 8197, 2011 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 81970W (5 December 2011); https://doi.org/10.1117/12.904731

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KEYWORDS

Point spread functions

Monochromatic aberrations

Error analysis

Imaging systems

Synthetic aperture imaging

Analytical research

MATLAB

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