Simulating atmosphere phase screens for dilute arrays

Details Simulating atmosphere phase screens for dilute arrays Simulating atmosphere phase screens for dilute arrays

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4838..815p&link_type=abstract

Interferometry for Optical Astronomy II. Edited by Wesley A. Traub . Proceedings of the SPIE, Volume 4838, pp. 815-823 (2003).

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We have developed a new algorithm for simulating atmospheric phase screens that is extremely efficient and flexible. It retains the N log N efficiency of algorithms based on the FFT and is able to take advantage of the small amount of atmosphere actually sampled by highly dilute arrays such as NPOI. Additionally, there is flexibility in the technique to relax (or adopt) the traditional "frozen screen" approximation. We describe the basis for the algorithms and how the code has been structured. Timing estimates are developed and we show preliminary results from the code which exhibit the correct behavior of phase difference power spectra with baseline.

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