Skip to main content
SpringerLink
Log in

A differential method of maximum entropy

  • Published:
Radiophysics and Quantum Electronics Aims and scope

Abstract

We consider a differential method of maximum entropy that is based on the linearity of Fourier transform and involves reconstruction of images from the differences of the visibility function. The efficiency of the method is demonstrated with respect to the recovery of source images with bright components against the background of a sufficiently weak extended base. The simulation results are given along with the maps of an extragalactic radio source 0059+581, which were obtained using the standard and differential methods of maximum entropy for three observation dates and show that the principle of differential mapping allows us to increase considerably the dynamic interval of images.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. G. Taylor,The Difmap Cookbook, California Institute of Technology, Pasadena (1994).

    Google Scholar 

  2. T. Cornwell, “Very Long Baseline Interferometry and the VLB”, in:ASP Conference Series (J. A. Zensus, P. J. Diamond, and P. J. Napier, eds.), vol. 82, 227 (1995).

  3. A. T. Baykova,Trans. IAA RAS, No. 58 (1993).

  4. A. T. Baykova, T. B. Pyatunina, and A. M. Finkel’shteyn,Trans. IAA RAS, No. 1, 22 (1997).

    Google Scholar 

  5. T. B. Pyatunina, A. T. Baykova, and A. M. Finkel’shteyn,Trans. IAA RAS, No. 1, 64 (1997).

    Google Scholar 

  6. A. T. Baykova,Izv. Vyssh. Uchebn. Zaved., Radiofiz.,34, No. 8, 919 (1991).

    Google Scholar 

  7. A. T. Baykova,Izv. Vyssh. Uchebn. Zaved., Radiofiz.,38, No. 12, 1267 (1995).

    Google Scholar 

Download references

Authors
  1. A. T. Baykova
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Institute of Applied Astronomy, Russian Academy of Sciences, St. Petersburg, Russia. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 41, No. 8, pp. 991–998, August, 1998.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Baykova, A.T. A differential method of maximum entropy. Radiophys Quantum Electron 41, 669–673 (1998). https://doi.org/10.1007/BF02676476

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02676476

Keywords

Search

Navigation