Tomographic reconstruction of atmospheric turbulence with the use of time-dependent stochastic inversion

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Sergey N. Vecherin - , New Mexico State University (Autor:in)
  • Vladimir E. Ostashev - , New Mexico State University, National Oceanic and Atmospheric Administration (Autor:in)
  • A. Ziemann - , Universität Leipzig (Autor:in)
  • D. Keith Wilson - , United States Army Engineer Research and Development Center (Autor:in)
  • K. Arnold - , Universität Leipzig (Autor:in)
  • M. Barth - , Universität Leipzig (Autor:in)

Abstract

Acoustic travel-time tomography allows one to reconstruct temperature and wind velocity fields in the atmosphere. In a recently published paper [S. Vecherin et al., J. Acoust. Soc. Am. 119, 2579 (2006)], a time-dependent stochastic inversion (TDSI) was developed for the reconstruction of these fields from travel times of sound propagation between sources and receivers in a tomography array. TDSI accounts for the correlation of temperature and wind velocity fluctuations both in space and time and therefore yields more accurate reconstruction of these fields in comparison with algebraic techniques and regular stochastic inversion. To use TDSI, one needs to estimate spatial-temporal covariance functions of temperature and wind velocity fluctuations. In this paper, these spatial-temporal covariance functions are derived for locally frozen turbulence which is a more general concept than a widely used hypothesis of frozen turbulence. The developed theory is applied to reconstruction of temperature and wind velocity fields in the acoustic tomography experiment carried out by University of Leipzig, Germany. The reconstructed temperature and velocity fields are presented and errors in reconstruction of these fields are studied.

Details

OriginalspracheEnglisch
Seiten (von - bis)1416-1425
Seitenumfang10
FachzeitschriftJournal of the Acoustical Society of America
Jahrgang122
Ausgabenummer3
PublikationsstatusVeröffentlicht - 9 Okt. 2007
Peer-Review-StatusJa
Extern publiziertJa

Externe IDs

PubMed 17927403
ORCID /0000-0002-6686-3736/work/142234746