Abstract
When an adaptive optical system is used in an imaging system observing extended targets, a method of correlation can be used to find the relative movements of the sub-images in its Hartman-Shack waterfront sensor. To get a sub-pixel accuracy, a curve fitting method is presented. This paper describes the method in detail, and presents the simulations and experimental results. These results show an accuracy of 0.1 pixels rms.
| Original language | English |
|---|---|
| Article number | 16 |
| Pages (from-to) | 78-82 |
| Number of pages | 5 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5639 |
| DOIs | |
| Publication status | Published - 2004 |
| Event | Adaptive Options and Applications III - Beijing, China Duration: 8 Nov 2004 → 9 Nov 2004 |
Keywords
- Adaptive optics
- Correlation curve fitting
- Extended targets
- Hartmann-Shack wavefront sensor
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