TY - GEN
T1 - SNR analysis according to the practical factors for Mie-scattering lidar
AU - Qiu, Zongjia
AU - Chen, Siying
AU - Zhang, Yinchao
AU - Lan, Tian
AU - Wang, Yuzhao
AU - Kong, Weiguo
AU - Liu, Peng
AU - Ni, Guoqiang
PY - 2009
Y1 - 2009
N2 - The effectiveness of the lidar scattering signal can be intuitively reflected by SNR. Thus the effective detection range can be objectively evaluated. Usually by theoretical analyzing the devices of lidar signal detection system, an ideal SNR model of scattering signal can be built. Under these circumstances the theoretical SNR might be an inflated value. For instance, when the detection distance is 20Km the SNR can be up to 20dB. However, in the practical experiment the 10Km's SNR is merely 3dB. From the results, it can be deduced that the effective distance range is far less than the simulation value. Consequently, other practical factors must be considered in SNR analysis for Mie-scattering lidar. In the paper the results of Mie scattering lidar experiment are shown firstly. Then the SNR is calculated through deducting the background noise. The background radiation specific gravity is also presented in this paper. The photomultiplier tubes dark-current is detected. And the effect of all noise components to the SNR is estimated. Meanwhile, some improve measurements to reduce the interference noise are mentioned.
AB - The effectiveness of the lidar scattering signal can be intuitively reflected by SNR. Thus the effective detection range can be objectively evaluated. Usually by theoretical analyzing the devices of lidar signal detection system, an ideal SNR model of scattering signal can be built. Under these circumstances the theoretical SNR might be an inflated value. For instance, when the detection distance is 20Km the SNR can be up to 20dB. However, in the practical experiment the 10Km's SNR is merely 3dB. From the results, it can be deduced that the effective distance range is far less than the simulation value. Consequently, other practical factors must be considered in SNR analysis for Mie-scattering lidar. In the paper the results of Mie scattering lidar experiment are shown firstly. Then the SNR is calculated through deducting the background noise. The background radiation specific gravity is also presented in this paper. The photomultiplier tubes dark-current is detected. And the effect of all noise components to the SNR is estimated. Meanwhile, some improve measurements to reduce the interference noise are mentioned.
KW - Mie-scattering lidar
KW - Noise analysis
KW - Proportion estimation
KW - Signal-to-noise ratio
UR - http://www.scopus.com/inward/record.url?scp=77955689721&partnerID=8YFLogxK
U2 - 10.1117/12.838220
DO - 10.1117/12.838220
M3 - Conference contribution
AN - SCOPUS:77955689721
SN - 9780819478979
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - 2009 International Conference on Optical Instruments and Technology - Optoelectronic Measurement Technology and Systems
T2 - 2009 International Conference on Optical Instruments and Technology - Optoelectronic Measurement Technology and Systems
Y2 - 19 October 2009 through 22 October 2009
ER -