Very High Resolution Airborne Lidar at Strathalbyn in Queensland, Australia

<p>An area of severe erosion on the Strathalbyn property near the Burdekin River in North Queensland was captured by ARA - Airborne Research Australia on 5 Sep 2017 using a Riegl Q680i-S Lidar (1064nm) mounted on one of ARA's research motorgliders. The aim was to test what the highest achievable resolution of such airborne lidar would be by flying several overlapping grids with narrow linespacing (50m and 100m) at 250m AGL. Achieved point densities are between 100 and 200 points per sqm. 8cm pixel size aerial RGB imagery is also available from ARA.</p><p>The data consist of two sites (Site 1 and Site 2) which are 0.767sqkm and 2.297sqkm in size, respectively.</p><p>The project is a collaboration between the Australian NESP (National Environmental Science Program) Project 3.1.7 "Gully rehabilitation" (http://nesptropical.edu.au/index.php/round-3-projects/project-3-1-7/) and ARA who also jointly funded the data capture and processing.</p><p>It is important to understand that due to the nature of the terrain and the much higher point densities achieved, standard point classification will not yield the desired results in a perfect manner. Research on this data set is ongoing at the two partner organizations. Third party users of this data set are encouraged to contact the project team via [e-mail].</p>

2017年9月5日，澳大利亚空中研究机构（ARA）利用搭载于其研究动力伞上的Riegl Q680i-S激光雷达（1064nm波长）对位于北昆士兰州布尔迪金河附近的Strathalbyn地产上的一片严重侵蚀区域进行了捕捉。此次行动旨在通过在250米空中悬停高度上，飞行数个重叠网格，并采用狭窄的线间距（50米和100米），测试此类机载激光雷达所能达到的最高分辨率。实际达到的点密度介于每平方米100至200点之间。此外，澳大利亚空中研究机构还提供了8厘米像素大小的航空RGB影像数据。该数据集包含两个场地（场地1和场地2），其面积分别为0.767平方公里和2.297平方公里。此项目为澳大利亚国家环境科学计划（NESP）第3.1.7项目“沟壑修复”（http://nesptropical.edu.au/index.php/round-3-projects/project-3-1-7/）与澳大利亚空中研究机构之间的合作项目，双方共同承担了数据采集和处理的费用。鉴于地形特性以及实现的点密度显著较高，标准的点分类方法将无法完美地产生预期结果。目前，该数据集的研究工作正在两个合作伙伴机构中持续进行。鼓励第三方用户通过[e-mail]与项目团队取得联系。