NSW DMR, Discovery 2000, AREA P, NARRABRI, NSW 2000 (P753), elevation line data

The Digital Elevation Model represents ground surface topography between points of known elevation. The elevation data was calculated using the altimeters and Global Positioning System (GPS) sensor used for the benefit of airborne magnetic and radiometric data on the same survey. The elevation is the height relative to the Australian Height Datum GDA94 (AUSGEOID09). The processed elevation data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. These line dataset from the NSW DMR, Discovery 2000, AREA P, NARRABRI, NSW 2000 survey were acquired in 2000 by the NSW Government, and consisted of 43190 line-kilometres of data at 400m line spacing and 80m terrain clearance.

数字高程模型（Digital Elevation Model）用于表征已知高程点之间的地表地形。该高程数据由为本次航空磁测与放射性测量作业配套使用的高度计及全球定位系统（GPS）传感器计算所得。本次采用的高程为相对于澳大利亚高程基准GDA94（AUSGEOID09）的高度值。经处理的高程数据由GA地球物理学家开展质量核验，以确保GA发布的最终数据符合使用要求。本次测线数据集源自新南威尔士州矿产资源局（NSW DMR）2000年实施的“Discovery 2000、AREA P、纳拉布里（NSW 2000）”航空测量项目，由新南威尔士州政府于2000年采集，数据总测线长度达43190公里，测线间距为400米，作业飞行地形离地高度为80米。