恶劣天气下机载单频GPS无人机数据处理工艺试验研究  

Experimental Study onSingle-frequency GPS UAV Data Processing under Bad Weather

作　　者：祝晓坤[1] 左琛[1] 刘晓琳[1] 龚芸[1] 

机构地区：[1]北京市测绘设计研究院/城市空间信息工程北京市重点实验室,北京100038

出　　处：《北京测绘》2015年第6期75-77,61,共4页Beijing Surveying and Mapping

摘　　要：机载单频GPS无人机在应急、特殊地形、恶劣天气等特殊情况下,会存在GPS定位精度低、大旋角、相机检校参数不精准等问题。本文针对恶劣天气下内蒙古乌海矿区获取的机载单频GPS无人机数据处理工艺进行试验研究,提出了预设航偏角初值的sift算子全自动特征匹配方法对工艺进行改进,并对利用该流程得到的无人机数据定向精度和正射影像成果精度进行了评价。Airborne single-frequency GPS UAV, under emergency, special terrain circumstance and bad weather etc. , has the problems of low GPS location precision, large yaw angle, low camera parameter precision. In this paper, it was carried out the experimental study of single-frequency GPS UAV data processing of Wuhan Inner Mongolia under bad weather. A Sift feature matching method with estimated initial yaw value was proposed to improve the work flow. Finally, the orientation accuracy and DOM accuracy were evaluated.

关 键 词：机载单频GPS无人机 恶劣天气 摄影测量 相机自检校 区域网平差 精度分析 

分 类 号：P237[天文地球—摄影测量与遥感]