Time-dependent stochastic inversion in acoustic tomography of the atmosphere with reciprocal sound transmission

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Sergey N. Vecherin - , New Mexico State University, United States Army Engineer Research and Development Center (Author)
  • Vladimir E. Ostashev - , New Mexico State University, National Oceanic and Atmospheric Administration (Author)
  • D. Keith Wilson - , United States Army Engineer Research and Development Center (Author)
  • A. Ziemann - , Leipzig University (Author)

Abstract

Time-dependent stochastic inversion (TDSI) was recently developed for acoustic travel-time tomography of the atmosphere. This type of tomography allows reconstruction of temperature and wind-velocity fields given the location of sound sources and receivers and the travel times between all source-receiver pairs. The quality of reconstruction provided by TDSI depends on the geometry of the transducer array. However, TDSI has not been studied for the geometry with reciprocal sound transmission. This paper is focused on three aspects of TDSI. First, the use of TDSI in reciprocal sound transmission arrays is studied in numerical and physical experiments. Second, efficiency of time-dependent and ordinary stochastic inversion (SI) algorithms is studied in numerical experiments. Third, a new model of noise in the input data for TDSI is developed that accounts for systematic errors in transducer positions. It is shown that (i) a separation of the travel times into temperature and wind-velocity components in tomography with reciprocal transmission does not improve the reconstruction, (ii) TDSI yields a better reconstruction than SI and (iii) the developed model of noise yields an accurate reconstruction of turbulent fields and estimation of errors in the reconstruction.

Details

Original languageEnglish
Article number125501
JournalMeasurement science & technology
Volume19
Issue number12
Publication statusPublished - 17 Oct 2008
Peer-reviewedYes
Externally publishedYes

External IDs

ORCID /0000-0002-6686-3736/work/142234744

Keywords

Keywords

  • Acoustic imaging, Inverse problems, Remote sensing, Stochastic inversion, Tomography of the atmosphere, Travel-time tomography