Post Hurricane Harvey Mapping of the Mission River, Texas 2018 (Ch 1, 2)

<p>This lidar dataset was collected as part of an NCALM Rapid Response Project for Inci Gunerlap at Texas A&M University. Data collection covers and area of ~69 km² along the Mission River in Refugio, Texas after Hurricane Harvey.</p> <p>Note that this project utilized three laser channels during its data collection. Channel 1 (1550 nm), Channel 2 (1064 nm), and Channel 3 (532 nm).</p> Pre-computed Rasters C1-2 contains the following: <ul><li>DEM from classified ground returns from Channels 1 and 2 (IR only)</li> <li>DSM from first return from Channels 1 and 2</li></ul> <p>This data collection also contains hyperspectral images that are 72 Band, 1.5 m pixel size, in PCIDSK (.PIX) format. The digital number in the PIX image corresponds to milli-SRU (spectral radiance units). One SRU is equivalent to one microwatt per square-centimeter per steradian per nanometer. Files are provided as individual flight strips as well as a single mosaic file of flight strips. These images can be downloaded <a href='https://opentopography.s3.sdsc.edu/minio/raster/TX18_Guneralp3C/TX18_Guneralp_HyperSpectral.zip'>here</a></p><p><br>Publications associated with this dataset can be found at <a href="http://calm.geo.berkeley.edu/ncalm/dtc.html" target="_blank">NCALM's Data Tracking Center</a></p>

<p>本激光雷达数据集系美国德克萨斯A&M大学Inci Gunerlap教授主持的NCALM快速响应项目所收集。数据采集范围覆盖了德克萨斯州Refugio市Mission河畔约69平方公里的区域，采集时间位于哈维飓风之后。</p><p>需要注意的是，该项目在数据采集过程中共使用了三个激光通道：通道1（1550纳米）、通道2（1064纳米）和通道3（532纳米）。</p><p>预计算的栅格数据C1-2包含以下内容：<ul><li>来自通道1和2分类地面回波的数字高程模型（仅红外波段）</li><li>来自通道1和2首次回波的数字表面模型</li></ul></p><p>此外，该数据集还包含72波段、1.5米像素尺寸的高光谱图像，存储于PCIDSK (.PIX) 格式。PIX图像中的数字对应于毫毫光谱辐射单位（milli-SRU）。1 SRU相当于每平方厘米每球面度每纳米的1毫微瓦。文件提供为单个飞行条带以及飞行条带的单一镶嵌文件。这些图像可通过<a href='https://opentopography.s3.sdsc.edu/minio/raster/TX18_Guneralp3C/TX18_Guneralp_HyperSpectral.zip'>此处</a>下载。</p><p><br>与该数据集相关的出版物可查阅<a href="http://calm.geo.berkeley.edu/ncalm/dtc.html" target="_blank">NCALM数据跟踪中心</a>。</p>