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A new data acquisition system for measuring the movement of atmospheric speckle patterns

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3 Author(s)
Li, Ruiming ; Communications Research Laboratory, Ministry of Posts and Telecommunications, 4-2-1, Nukui-kitamachi, Koganei, Tokyo, 184, Japan ; Takabe, Masao ; Aruga, Tadashi

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To measure the movement of atmospheric speckle patterns, we establish a new data acquisition system that consists of a 50 cm telescope, an intensified charge-coupled device (ICCD) camera, a photomultiplier with a pinhole, and two personal computers (PCs) including data acquisition hardware. This system is easy to establish and allows the capture of a high-resolution image. A simple positioning method of the pinhole in front of the photomultiplier is introduced. With 1500 pairs of the measurement data samples, a clear correlation peak can be found by processing them according to the general definition of correlation. Some measurement and analysis results are given. © 1999 American Institute of Physics.

Published in:

Review of Scientific Instruments  (Volume:70 ,  Issue: 4 )