新型机载激光测深系统及其飞行实验结果  

A New Airborne Laser Bathymetry System and Survey Result

作　　者：胡善江[1] 贺岩[1] 臧华国[1] 崔雪梅[1] 朱小磊[1] 陈卫标[1] 

机构地区：[1]中国科学院上海光学精密机械研究所,上海201800

出　　处：《中国激光》2006年第9期1163-1167,共5页Chinese Journal of Lasers

基　　金：国家863计划(2001AA613010)资助项目

摘　　要：新研制的机载激光测深系统与第一代机载激光测深系统相比,在探测信号采集率、浅水测量能力、测点定位精度和系统的自动化方面都有较大的提高。新系统采用1000 Hz激光器以提高测量密度,分设深水浅水双通道接收回波信号以提高浅水探测能力,装配高精度的惯性导航系统(IMU)和全球定位系统(GPS)提高了测点的定位精度和深度精度,数据后处理进行了潮汐改正和波浪改正提高深度测量的精度。系统在某海域进行了多次飞行实验,实验数据经过分析和处理,得到了比较满意的结果,表明该激光测深系统在测深精度和测量效率等方面,已经接近实用化。A new airborne laser bathymetry system is developed. Compared with the previous one, the new system is improved in data acquisition rate, accuracy of measuring point position, ability of shallower water detecting and automatic operating. 1000 Hz laser is used to improve density of points gird, backward signals are separated into two channels of deep water and shallow water to enhance the ability of detecting signal from shallow water, high accuracy inertial measurement unit （IMU） and global positioning system （GPS） are equipped to improve the measuring point accuracy of orientation and depth. In addition, tide correcting and wave correcting are applied to improve the depth accuracy in data processing. The new system has been tested several times over a sea. The obtained results show that the new system can be practical in ocean survey with good depth accuracy and efficiency.

关 键 词：激光技术 机载激光测深 海底数值高程 海浪波高 浅水测量 测量密度 

分 类 号：TN959.73[电子电信—信号与信息处理] TN249[电子电信—信息与通信工程]