...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of remote sensing >Digital surface models from ZiYuan-3 triplet: performance evaluation and accuracy assessment
【24h】

Digital surface models from ZiYuan-3 triplet: performance evaluation and accuracy assessment

机译：ZiYuan-3三元组的数字表面模型：性能评估和准确性评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

At the beginning of 2012, a new optical satellite, called ZiYuan-3 (ZY-3), was launched from the Taiyuan Satellite Launch Centre. This article is aimed at the analysis and the assessment of the digital surface models (DSMs) and orthophotos from a ZY-3 triplet acquired over the city of Bolzano and the surrounding areas. The imagery processing chain was executed with four different software packages. In all cases the Rational Polynomial Functions (RPFs) orientation model was used, with rational polynomial coefficients (RPCs) supplied by the vendors. The accuracies of the extracted DSMs were compared with the public light detection and ranging (lidar) DSM. The DSM extracted with each software package was used to generate the corresponding orthophoto. The orthophoto accuracy was assessed against 1:5000/1:10000 maps. The results obtained show that ZY-3 imagery allow us to generate DSMs with an accuracy, in terms of root mean square error (RMSE), which can reach 1.5-4.2 m in the flat area, 3.9-6.9 in the urban area, and 5.7-8.2 m in the mountain area. These results are better than Shuttle Radar Topography Mission (SRTM). Regarding orthophoto generation, all software packages supply similar results with a significant bias of about 20 m, mainly caused by vendors' RPC inaccuracy.
机译：2012年初，太原卫星发射中心发射了一颗名为ZiYuan-3（ZY-3）的新光学卫星。本文旨在分析和评估从博尔扎诺市及周边地区获得的ZY-3三元组的数字表面模型（DSM）和正射照片。图像处理链是通过四个不同的软件包执行的。在所有情况下，均使用有理多项式函数（RPF）定向模型，并由供应商提供有理多项式系数（RPC）。将提取的DSM的准确性与公共光检测和测距（激光）DSM进行比较。每个软件包提取的DSM用于生成相应的正射影像。针对1：5000/1：10000的贴图评估了正射照相的准确性。获得的结果表明，ZY-3影像使我们能够以均方根误差（RMSE）的精度生成DSM，该均方根误差在平坦区域可达到1.5-4.2 m，在城市区域可达到3.9-6.9，山区5.7-8.2 m。这些结果优于航天飞机雷达地形任务（SRTM）。关于正射影像的产生，所有软件包都提供相似的结果，其偏差大约为20 m，这主要是由供应商的RPC错误引起的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号