| 摘要: |
| 针对机载激光对埋地犬然气管定位这一特殊应景，对t定位原理进行研究,阐述jt实现方法，分析 激光对管道定位梢度影响的因素,介绍定位误差建模方法。以载机位姿误差为例，给出定位误差敏感误差源的辨识 方法和步骤结果丧明:载机的位姿精度足影响定位精度的主要W素,俯仰角误差对地瓯点误差影响最大,滚转角 误差对地面点误差的影响较小，地面点的定位误差几乎不受载机高度误差的影响。分析结果提高了定位误差避免 和误尨补偿的效率。 |
| 关键词: 机载激光 埋地脊道 自主定位 定位误差 误差分析 |
| DOI：10.3969/j.issn.1673-5005.2012.02.026 |
| 分类号:TE 973.91 |
| 基金项目:M家“ 863”计划项H (2008AA06E208} |
|
| Sensitivity analysis of orientation error of airborne laser autonomous positioning to gas pipeline |
|
LIU Hai-fang1,2, WANG Rui2,ZHONG Shi-sheng1,LIU Ke-qiang2
|
|
(1. School of Meckatronics Engineering in Harbin Inslilule of Technology^ Harhin 150001, China;2. School of Naval Archileclure in Harbin Institute of Technology ( W^ihai) , Weihai 264209, China )
|
| Abstract: |
| Based on the particular application background of the remote sensing detection of the buried natural gas pipeline leak by the airborne aser, the accurate positioning of the buried natural gas pipeline hy the laser is prerequisite. The bai>ic theory of the airborne laser-to-ground positioning system was briefed and the realized method was introduced, and the influence of the laser on the positioning system was analyzed. Hie general error equation of this remote sensing system was derived from the error propagation law and ihe accuracy under different conditions was estiraatei!. The results show that the position and orienlation accuracy of the airbome is the main factor affecting the positioning accuracy. The error in pitch angle plays a more important role in grounil point error，while the, roll angle has little effett. Under the consideration of point positioning accuracy, ihe influonre of the error in altitude is the least. These analysis results can enhance the effn iency of error prevention and error compensation. |
| Key words: airb)me laser buried pipeline autonomous positioning positiuning error error analysis |
