Development of a multi-point LDV by using semiconductor laser with FFT-based multi-channel signal processing

T. Hachiga, N. Furuichi, J. Mimatsu, K. Hishida, M. Kumada

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

An advanced multi-point LDV with FFT-based multi-channel signal processing, using a 1-bit FFT approach has been developed. A semiconductor laser light sheet, a 96-channel plastic optical fiber array, 16-Si APDs and a 16-channel capacious (1 M word) memory system with 1 bit were used in order to attain 16 individual Doppler frequencies simultaneously. Several experiments were conducted in this study to test the performance of the advanced multi-point LDV. We confirmed that the advanced multi-point LDV could be a useful, compact and inexpensive optical measuring instrument for obtaining the information of a velocity field as a function of time and position.

Original languageEnglish
Pages (from-to)70-76
Number of pages7
JournalExperiments in Fluids
Volume24
Issue number1
DOIs
Publication statusPublished - 1998 Jan

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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