Abstract

We apply bispectrum analysis to one-dimensional astronomical infrared specklegrams and compare the recovered phases and their variances with those obtained by the Knox–Thompson algorithm. A number of averaging techniques are used to combine the multiple object phase estimates from the average bispectrum phases. Analysis of these techniques indicates that only a fraction of the nonredundant support of the bispectrum is necessary for the object phase retrieval. We have calibrated our bispectra for zero-mean additive detector noise. Results are presented for a bright point source and the nearby binary star Ross 614AB along with its point-source comparison. The point-source results indicate a phase structure that may be due to telescope aberrations that do not average out in the bispectrum process. The point-source-calibrated phases obtained for Ross 614AB from the bispectrum analysis show the binary structure out to higher spatial frequencies than do the Knox–Thompson results.

© 1988 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Phase errors in near-axis bispectral stellar image reconstruction

Julian Meng and George J. M. Aitken
J. Opt. Soc. Am. A 11(6) 1736-1747 (1994)

Practical aspects of image recovery by means of the bispectrum

Pedro Negrete-Regagnon
J. Opt. Soc. Am. A 13(7) 1557-1576 (1996)

Self-calibrating shift-and-add technique for speckle imaging

Julian C. Christou, E. Keith Hege, Jonathan D. Freeman, and Erez Ribak
J. Opt. Soc. Am. A 3(2) 204-209 (1986)

References

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
Login to access OSA Member Subscription

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 OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (13)

You do not have subscription access to this journal. Figure files 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
Login to access OSA Member Subscription

Equations (44)

You do not have subscription access to this journal. Equations 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
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics 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
Login to access OSA Member Subscription