摘要
在实验的基础上获取了航摄姿态角的分布范围,重点分析了POS系统辅助航空摄影测量时,姿态角的实时变化对外方位元素测定结果的影响以及采用飞行检校场法对其进行系统误差补偿的局限性;提出了采用附加参数法对系统误差进行改正,并将观测值的改正参数和观测值一起作为带权观测值参与平差计算的方法;并通过实例证明了该方法能达到理想的效果。
With the study of POS attitude angle range in experiments,this paper pointed out that attitude angle's real-time changes seriously affect positioning accuracy.Existing solutions such as flight calibration field cannot compensate for system error.Accounting for the shortage,an additional parameter method was proposed to correct the system error,which was characterized that bundle block adjustment weighted utilizes both the POS determined positions and attitudes of aerial camera.It was verified by experiments that this approach could further avoid fundamental error as well as compensate for system error.
出处
《地理空间信息》
2012年第5期11-13,16,共4页
Geospatial Information
基金
国家测绘局航空摄影项目III期(TC09AN01)
关键词
姿态角
外方位元素
检校场
附加参数
平差
attitude angle,elements of exterior orientation,calibration field,additional parameters,adjustment
