基于IGG3的数字工业摄影测量抗差光束法平差

发布时间：2018-02-09 05:19

本文关键词： 数字工业摄影测量光束法平差抗差外符合精度内符合精度　出处：《测绘科学技术学报》2017年04期 　论文类型：期刊论文

【摘要】：数字工业摄影测量中,相机拍摄的不同相片得到的像点坐标被视为等精度观测值,其权值被定为单位权进行平差计算。自检校光束法平差能够有效的补偿系统误差,但测量过程中仍然不可避免地存在粗差和随机误差。为了进一步提高数字工业摄影测量平差计算结果的精度,结合抗差估计具有"充分利用有效信息,限制利用有用信息,排除有害信息"的特点,对自检校光束法平差方法进行改进,提出了一种基于IGG3的抗差光束法平差方法;并进行公共点转换实验和重复测量实验来评价其外符合精度和内符合精度。实验结果表明改进后的方法比原方法计算所得的结果精度更高。
[Abstract]:In digital industrial photogrammetry, the coordinates of image points obtained from different photographs taken by the camera are regarded as equal precision observations, and their weights are determined as unit weights for adjustment calculation. The self-calibrating beam adjustment can effectively compensate for system errors. However, gross error and random error still inevitably exist in the process of measurement. In order to further improve the accuracy of the adjustment results of digital industrial photogrammetry, combined with robust estimation, it has the advantages of "making full use of effective information and limiting the use of useful information," Removing harmful information ", the adjustment method of self-checking beam method is improved, and a method of robust beam adjustment based on IGG3 is proposed. The common point conversion experiment and repeated measurement experiment are carried out to evaluate the accuracy of the external and internal coincidence. The experimental results show that the improved method is more accurate than the original method.
【作者单位】：信息工程大学;
【基金】：河南省科技攻关项目(152102210006;162102210029)
【分类号】：P231.5

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