定角圆锥扫描式机载激光测深系统定位模型与精度评价

doi:10.11947/j.AGCS.2016.20150161

测绘学报 ›› 2016, Vol. 45 ›› Issue (4): 425-433.doi: 10.11947/j.AGCS.2016.20150161

定角圆锥扫描式机载激光测深系统定位模型与精度评价

李凯, 张永生, 童晓冲, 申二华

信息工程大学地理空间信息学院, 河南郑州 450001

收稿日期:2015-04-01 修回日期:2016-01-07 出版日期:2016-04-20 发布日期:2016-04-28
作者简介:李凯(1992-),男,硕士生,研究方向为机载激光测深技术。
基金资助:
国家自然科学基金(41201392);信息工程大学地理空间信息学院硕士学位论文创新创优基金(XS201502)

Positioning Model and Accuracy Evaluation of Conical Scanning Airborne Laser Bathymetry System

LI Kai, ZHANG Yongsheng, TONG Xiaochong, SHEN Erhua

Institute of Survering and Mapping, Information Engineering University, Zhengzhou 450001, ChinaAbstract

Received:2015-04-01 Revised:2016-01-07 Online:2016-04-20 Published:2016-04-28
Supported by:
The National Natural Science Foundation of China(No.41201392);Master Thesis Innovation Foundation of Geospatial Information Institute of Information Engineering University(No.XS201502)

摘要/Abstract

摘要： 从定角圆锥扫描式机载激光测深系统激光测距仪内部结构出发,推导了棱镜、大气、海水中激光光线方向矢量方程,结合GPS/INS定位定姿系统,推导出激光脚点在成图坐标系中的定位模型。充分考虑对机载激光测深系统定位精度产生影响的各个因素,通过误差传播定律给出了圆锥扫描式机载激光测深系统的综合精度评价模型。参照国际上应用广泛的相关仪器系统参数、指标,对机载激光测深系统的定位精度进行实际计算,并对定位模型中涉及的主要误差源进行分析和讨论。

关键词: 定角圆锥扫描, 机载激光测深, 定位模型, 精度评价

Abstract: Conical scanning airborne laser bathymetry system with fixed angle is selected as a research object to deduce the vector equation of laser in the prism, the atmosphere and the water from the internal structure of the laser rangefinder. Then the vector equation is combined with GPS/INS to deduce positioning model of foot laser point in mapping coordinates. The factors that influence the positioning accuracy of the airborne laser bathymetry system are fully considered and comprehensive accuracy evaluation model of conical scanning airborne laser bathymetry system is given with the use of error propagation law. System parameters, indicators which are widely used in the world are used to calculate the positioning accuracy of airborne laser bathymetry system. The main sources of error involved in positioning model are analyzed and discussed.

Key words: fixed angle conical scan, airborne laser bathymetry, positioning model, accuracy evaluation

中图分类号:

P225.2

李凯, 张永生, 童晓冲, 申二华. 定角圆锥扫描式机载激光测深系统定位模型与精度评价[J]. 测绘学报, 2016, 45(4): 425-433.

LI Kai, ZHANG Yongsheng, TONG Xiaochong, SHEN Erhua. Positioning Model and Accuracy Evaluation of Conical Scanning Airborne Laser Bathymetry System[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(4): 425-433.

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定角圆锥扫描式机载激光测深系统定位模型与精度评价

Positioning Model and Accuracy Evaluation of Conical Scanning Airborne Laser Bathymetry System

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