Acta Optica Sinica, Volume. 31, Issue 7, 711001(2011)
On-Orbit MTF Measurement of High Resolution Satellite Optical Camera Using Periodic Targets
Modulation transfer function (MTF) is one of the important parameters of high-spatial-resolution satellite optical cameras. A new method for in-flight MTF measurement using periodic targets is presented. It can directly obtain the MTF value at Nyquist frequency and MTF plots by parametric model. The experimental results show that the satellite optical camera′s MTF can be directly and accurately acquired by deployment of five groups of non-integer pixel (ground sample distance) interval of three-bar targets in cross and along track directions respectively, and can be arranged with the large-area target in homogenous dark background. The error is less than 5% and the approach can satisfy the application requirements for spaceborne estimation.
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Xu Weiwei, Zhang Liming, Yang Benyong, Chen Hongyao. On-Orbit MTF Measurement of High Resolution Satellite Optical Camera Using Periodic Targets[J]. Acta Optica Sinica, 2011, 31(7): 711001
Category: Imaging Systems
Received: Jan. 7, 2011
Accepted: --
Published Online: Jun. 28, 2011
The Author Email: Weiwei Xu (taiyu5555532@gmail.com)