Matched filtering-parameter estimation method and analysis of whistlers recorded at Varanasi

R. P. Singh, R. P. Patel, Ashok K. Singh, D. Hamar, J. Lichtenberger

Research output: Contribution to journalConference article

10 Citations (Scopus)


The matched filtering technique is based on the digital-construction of theoretical whistlers and their comparison with observed whistlers. The parameters estimated from the theoretical and experimental whistler curves are matched to have higher accuracy using digital filters. This yields a resolution ten times better in the time domain. We have tested the applicability of this technique for the analysis of whistlers recorded at Varanasi. It is found that the whistlers have propagated along L > 2 and have wave normal angles after exiting from the ionosphere such that they propagate towards equator in the earth-ionosphere wave-guide. High-resolution analysis shows the presence of fine structures present in the dynamic spectrum. An effort is made to interpret the results.

Original languageEnglish
Pages (from-to)685-691
Number of pages7
JournalPramana - Journal of Physics
Issue number5-6
Publication statusPublished - Jan 1 2000
Event14th National Symposium on Plasma Science and Technology - Amritser, India
Duration: Dec 21 1999Dec 24 1999


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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