Tanami Merged - ground elevation geoid grid (laser)

Digital Elevation data record the terrain height variations from the processed point- or line-located data recorded during a geophysical survey. This Tanami Merged - ground elevation geoid grid (laser) is elevation data for the NTGS Tanami Merged Detailed Airborne Magnetic Radiometric and Digital Elevation Survey, NT, 2018. This survey was acquired under the project No. 1312 for the geological survey of NT. The grid has a cell size of 0.00018 degrees (approximately 20m). This grid contains the ground elevation relative to the geoid for the NTGS Tanami Merged Detailed Airborne Magnetic Radiometric and Digital Elevation Survey, NT, 2018. It represents the vertical distance from a location on the Earth's surface to the geoid. The data are given in units of meters. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.

数字高程数据（Digital Elevation Data）记录了地球物理勘探过程中采集并经处理的点位或线状数据所反映的地形高程变化。本塔纳米合并（激光）地面高程大地水准面格网数据集，对应2018年北领地（Northern Territory，NT）北领地地质调查局（Northern Territory Geological Survey，NTGS）开展的塔纳米合并详细航空磁测与数字高程勘探项目的成果数据。该勘探隶属于北领地地质调查项目，项目编号为1312。此格网的单元尺寸为0.00018度（约20米），包含上述2018年北领地NTGS塔纳米合并详细航空磁测与数字高程勘探项目中相对于大地水准面的地面高程数据，代表地球表面任意点位至大地水准面的垂直距离，数据单位为米。经澳大利亚地质调查局（Geoscience Australia，GA）地球物理学家开展质量核查，确保GA发布的最终数据符合预期使用需求。