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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 22, issue 5
Ann. Geophys., 22, 1687–1689, 2004
https://doi.org/10.5194/angeo-22-1687-2004
© Author(s) 2004. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 22, 1687–1689, 2004
https://doi.org/10.5194/angeo-22-1687-2004
© Author(s) 2004. This work is distributed under
the Creative Commons Attribution 3.0 License.

  08 Apr 2004

08 Apr 2004

Time resolution of cosmic noise observations with acorrelation experiment

E. Nielsen1, F. Honary2, and M. Grill2 E. Nielsen et al.
  • 1Max Planck Institute for Aeronomy, 37191 Katlenburg-Lindau, Germany
  • 2Communications Research center, Faculty of Applied Sciences, Lancaster University, Lancaster, UK

Abstract. A radio wave correlation experiment using a Mills Cross technique can be used to observe the cosmic noise intensity from the ground for the purpose of determining the absorption in the ionosphere. To ensure a time resolution of 10 to 20s of the absorption observations, it is necessary that the autocorrelation function of the signal received within a wanted spatial resolution and in a given receiver is >8% of the total signal amplitude incident on that receiver.

Key words. Radio Science (Instruments and techniques; Interferometry; Ionospheric physics)

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