Design of airborne dual-frequency laser radar system

Aiming at the mapping requirements of forestry, architecture, offshore, island reef and beach, the Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, has developed a prototype of airborne dual-frequency laser radar. It can simultaneously carry out mapping of terrain and submarine terrain. The prototype has been tested in Wuzizhou Island of Sanya with a maximum detection depth of 30 m, equivalent to 50 m under class A water quality conditions, the minimum detection depth of 0.22 m. Depth data and single-beam sonar data comparison error is 0.108 m, ranging data and field-measured data comparison error is 0.18 m. The results are in accordance with the design expectations.