Tanami NS 4NE - 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 NS 4NE - ground elevation geoid grid (laser) is elevation data for the NTGS Tanami NS 4NE Region 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 NS 4NE Region 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的经处理的点位或测线测点数据所反映的地形高程起伏变化。本数据集为塔纳米NS 4NE区域地面高程大地水准面（geoid）激光（laser）格网数据，源自2018年北领地（Northern Territory，简称NT）塔纳米NS 4NE区域详细航空磁辐射计测量与数字高程测量调查。该调查由北领地地质调查局（Northern Territory Geological Survey，简称NTGS）以项目编号1312实施，服务于北领地地质调查工作。该格网的单元格尺寸为0.00018度（约20米）。本格网包含2018年北领地塔纳米NS 4NE区域详细航空磁辐射计测量与数字高程测量调查中，相对于大地水准面的地面高程数据，其代表地球表面某点位至大地水准面的垂直距离，数据单位为米。经处理的数据已由澳大利亚地球科学局（Geoscience Australia，简称GA）的地球物理学家完成质量核查，以确保GA发布的最终数据符合使用需求。