Liverpool Plains, NSW, 1995 (P625), 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 Liverpool Plains, NSW, 1995 survey were acquired in 1995 by the NSW Government, and consisted of 43192 line-kilometres of data at 200m 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。本次高程数据通过高度计与全球定位系统（Global Positioning System, GPS）传感器计算得到，该套传感器同步服务于本次航空磁测与放射性测量作业。该高程为相对于澳大利亚高程基准GDA94（AUSGEOID09）的海拔高度。经处理的高程数据已由GA地球物理学家开展质量核查，以确保该局发布的最终数据符合使用需求。本次测线数据集源自新南威尔士州利物浦平原1995年作业项目，由新南威尔士州政府于1995年采集，包含43192千米测线数据，测线间距为200米，作业离地高度为80米。