Analysis of noise in residual turbulent scintillation lidar

Abstract

Abstract: The classification of noise in the returned signal of RTS(Residual Turbulent Scintillation) lidar was introduced. Based on changing condition of experimental status, the amplitude and variance of different sum of the baseline of A/D card, amplifier, PMT, background noise and shot noise was acquired, and so was themselves. By comparison of different noise, it is found that the baseline of amplifier is primary and background noise is small when telescope don’t receive atmospheric scattering signal. When telescope receives scattering signal, the shot noise is primary in near range (2km for near channel and 4km for far channel), and is small in far range. The experiment results determine different impact of different noise on total noise, and provide suggestion on acquiring atmospheric turbulence form returned signal of RTS lidar , as also as reducing influence of noise on effective signal.

Key words: atmospheric optics, lidar noise, variance, noise scale factor

CLC Number:

P427.1

CUI Chao-long, HUANG Hong-hua, TAO Zong-ming, RAO Rui-zhong. Analysis of noise in residual turbulent scintillation lidar[J]. J4, 2013, 30(5): 628-634.

References

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