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Techniques for retrieval of the boundary displacement data in gas-dynamic experiments using millimeter-waveband radio interferometers

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Abstract

We describe a radio-interferometry method for measuring movement parameters of objects in application to gas-dynamic experiments. The origins of biasing in calculation of these parameters from measured interferograms are discussed. Bias reduction algorithms for the interferometer signal processing are described. For experimental setups with a single moving boundary, this algorithm is optimal for estimating the instantaneous phase and frequency of a narrow-band signal with bandpass prefiltering and quadrature-channel signal orthonormalization. For experiments with several moving boundaries, it provides the interferogram curve fitting by parameters of the electrodynamic model of an experimental setup. The results of test experiments verifying the reliability of the obtained information are presented.

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Authors and Affiliations

  1. N. I. Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia

    V. A. Kanakov & S. Yu. Lupov

  2. Yu. E. Sedakov Institute of Measuring Systems, Nizhny Novgorod, Russia

    Yu. I. Orekhov

  3. All-Russia Institute of Experimental Physics of the Russian Federal Nuclear Center, Sarov, Russia

    A. V. Rodionov

Authors
  1. V. A. Kanakov
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  2. S. Yu. Lupov
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  3. Yu. I. Orekhov
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  4. A. V. Rodionov
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Corresponding author

Correspondence to V. A. Kanakov.

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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 51, No. 3, pp. 234–246, March 2008.

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Kanakov, V.A., Lupov, S.Y., Orekhov, Y.I. et al. Techniques for retrieval of the boundary displacement data in gas-dynamic experiments using millimeter-waveband radio interferometers. Radiophys Quantum El 51, 210–221 (2008). https://doi.org/10.1007/s11141-008-9021-y

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  • DOI: https://doi.org/10.1007/s11141-008-9021-y

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