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Volume 23 Issue 4
Sep.  2013
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PMT gain changing measurement for airborne laser depth sounding

  • 1.

    National Laboratory of Laser Technology, HUST, Wuhan, 430074

  • Received Date: 1998-08-14
  • The return signals from airborne laser depth sounding have dynamic ranges that exceed the capabilities of the sequential measurement equipments.The study on gain controlling of photomutiplier tubes(PMT) GDB-333,GDB-49 and R1333 have been carried out.The results show that the signal dynamic range can be compressed to 2.5×104orders by controlling the electric potential of grid and eletromutiplier electrode.The method of changing PMT gain to detect signals from sea bottom is very compatible to airborne laser depth sounding.
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    Penny M F,Abbot R H,Phillips D M et al.Appl Opt,1986;25(13):2047
    [2]

    Guenther G C,Goodman L R.SPIE,1978;160:174
    [3] 叶嘉雄.光电信号与信号处理.北京:科学出版社,1997:162
    [4] 朱晓,杨克成,李再光 et al.中国激光,1996;.A23(3):273
    [5] 朱晓,杨克成,李再光 et al.中国激光,1998;.A25(5):470
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PMT gain changing measurement for airborne laser depth sounding

  • 1. National Laboratory of Laser Technology, HUST, Wuhan, 430074
  • Received Date: 1998-08-14
  • Available Online: 1999-07-25

Abstract: The return signals from airborne laser depth sounding have dynamic ranges that exceed the capabilities of the sequential measurement equipments.The study on gain controlling of photomutiplier tubes(PMT) GDB-333,GDB-49 and R1333 have been carried out.The results show that the signal dynamic range can be compressed to 2.5×104orders by controlling the electric potential of grid and eletromutiplier electrode.The method of changing PMT gain to detect signals from sea bottom is very compatible to airborne laser depth sounding.

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