基于RPC模型区域网平差技术的立体影像DSM提取

摘要

研究了利用卫星立体影像中提供的有理多项式系数(RPC)参数,采用基于RPC模型的区域网平差技术提取数字表面模型(DSM)的方法.研究结果表明,该方法提取的DSM效果较好.与Google Earth影像比较,中误差(RMSE)为6.122m,误差在8m以内的占参考点总数的80%,10m以上的占12%,最大误差为15.301m.%The paper studies the extraction of digital surface model (DSM) using block-adjustment technology based on rational polynomial coefficient (RPC) model.The results show that this method has a better extraction of DSM.Compared with Google Earth, the root mean square error (RMSE) is 6.122m; the reference points with error less than 8m account for 80％ of the total number, and those above 10m account for 12％; the maximum error is 15.301m.