机载激光测深系统测深误差源的研究  

Application on Error Sources Surveying Sea-water Depths with an Airborne Laser Sounding System

作　　者：刘基余[1] 李松[2] 

机构地区：[1]武汉测绘科技大学地学测量工程学院,武汉市珞喻路129号430079 [2]武汉测绘科技大学光电工程学院,武汉市珞喻路129号430079

出　　处：《武汉测绘科技大学学报》2000年第6期491-495,共5页Geomatics and Information Science of Wuhan University

摘　　要：机载激光测深系统将成为 2 1世纪精细测绘海底地形和探测水下目标的高新技术设备。本文论述了影响机载激光测深精度的附设误差和海水深度的测量误差两大误差源。The airborne laser sounding system will become an advanced equipment in surveying water depths and detecting underwater targets and possible hazards in the water in 21 century.It is being made cooperatively by Chinese research units to survey Chinese sea_water territories.When making the airborne laser sounding system it is necessary to distribute carefully the accuracy specifications for its subsystems. According to our research the accuracy surveying sea_water depths relates not only to the self_system errors, but also to error sources from the airborne auxiliary equipment. This paper focuses on two error sources influencing on a sounding accuracy: 1) auxiliary errors resulting from the airborne accelerometer and sweep equipment; 2) errors surveying sea_water depths by means of the airborne Laser sounding system. Especially,it is pointed out that multicolor laser can be used to determine effectively the refractive corrections in the sea_water,so as to mitigate an influence of the refraction index error on the sounding accuracy.

关 键 词：机载激光测深 海水深度 精度 误差 

分 类 号：P229.1[天文地球—大地测量学与测量工程] P207.1[天文地球—测绘科学与技术]