On echo signal of complex cloud background based on narrow pulse laser detector
Jing Li 1 ,Mengyao Li 2 ,Wentan Li3
COMPUTER MODELLING & NEW TECHNOLOGIES 2014 18(12A) 558-562
1 School of Computer and Control Engineering, North University of China, Taiyuan, Shanxi 030051, China
2 School of Information and Electrical Engineering,China University of Mining and Technology,xuzhou,jiangsu 221116,China
3 The Nanjing Branch of Shanghai Baosight Software Company, Nanjing, 210039,China
In consideration of the poor ability of anti-interference to cloud of the present laser detector, the characteristics of laser back scattering is studied according to the extinction coefficient of cloud, so as to build a signal-to-noise ratio model under the
backgrounds of uniform and non-uniform cloud. In addition, under the condition of certain laser energy, the simulation and experimental analysis on the echo signal of laser detection with different pulse width of 100 ns, 10 ns and 1 ns are conducted. The analysis shows that the result of the experiment and calculation are perfectly in accordance with each other, and the narrower the pulse width of lasing is, the higher the signal-to-noise ratio of the system is, that is, the higher the ability of anti-interference to cloud of the laser detection system is. Undoubtedly, this is of great significance in the improvement on the ability of anti-interference to cloud, the enlargement of the distance and the enhancement of the accuracy of the laser detector.