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
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription