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《Laser & Infrared》 2003-01
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Frequency Analyzing of Backscattering Signals in Airborne Laser Bathymetry

ZHU Xiao 1,WANG Hua 1,QI Li-jun 1,ZHANG Yun-dong 2 (1.National Laboratory of Laser Technology,H.U.S.T.,Wuhan 430074,China; 2.Harbin Institute of Technology,Institute of Opto-electronics, National Key Lab of Tunable Laser Technology,Harbin 150001,China)  
In terms of Airborne laser bathymetry backscatter ing lider equation,the backscattering envelop is analyzed in the field of frequency.The frequency included in backscatter envelop would broad 236MHz and 220MHz when the attenuation coefficient of sea water changes from 0.2/m to 0.9/m and the albedo of the sea water changes from 0.1 to 0.9 respectively.The altitude of the plane and the optical receiver field of view have little effect on the frequency of backscattering signals.When the sensitivity of the detecting system is 1.56×10 -10 W,the frequency width of backscattering envelop is 0f5.6×10 8Hz,under the typical experimental parameters.
【Fund】: 可调谐激光国防重点实验室开放基金资助
【CateGory Index】: TN958.98
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