Real-time measurement of atmospheric parameters for the 127-element adaptive optics system of 1.8-m telescope
Chinese Optics Letters, Vol. 10, Issue 12, pp. 120101-120101 (2012)
Acrobat PDF (724 KB)
Abstract
A real-time method for measuring atmospheric parameters based on co-processor field-programmable gate array (FPGA) and main processor digital signal processing (DSP) is proposed for ground-based telescopes with adaptive optics (AO) systems. Coherence length, outer scale, average wind speed, and coherence time are estimated according to closed-loop data on the residual slopes and the corrected voltages of AO systems. This letter introduces the principle and architecture design of the proposed method, which is successfully applied in the 127-element AO system of the 1.8-m telescope of Yunnan Astronomical Observatory. The method enables real-time atmospheric observations with the same object and path of the AO system. This method is also applicable to extended objects.
© 2012 Chinese Optics Letters
OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(200.4560) Optics in computing : Optical data processing
(110.1080) Imaging systems : Active or adaptive optics
ToC Category:
Atmospheric and Oceanic Optics
Citation
Jie Mu, Wenjia Zheng, Mei Li, and Changhui Rao, "Real-time measurement of atmospheric parameters for the 127-element adaptive optics system of
1.8-m telescope," Chin. Opt. Lett. 10, 120101-120101 (2012)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-10-12-120101
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- Theory of branch-point detection and its implementation (JOSAA)
- Photon statistics in partially compensated wave fronts (JOSAA)
- Analysis of measured photon returns from sodium beacons (JOSAA)
- Variance of the Strehl ratio of an adaptive optics system (JOSAA)
- Measuring wind speeds and turbulence with a wave-front sensor (OL)
Related Conference Papers
- Efficient, Adaptive Wave-Front Control for High-Order Adaptive Optics
- Solving Propagation Problems in Turbulence Using Filter Functions and Mellin Transforms
- Optimality, Observers and Controllers in Adaptive Optics
- Atmospheric Turbulence Outer Scale Profile for MCAO Specifications
- Atmospheric Turbulence Outer Scale Profile for MCAO Specifications
OSA is a member of 