NSW DMR, Discovery 2000, 1994-95, AREA F, Brewarrina (P736), 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, 1994-95, AREA F, Brewarrina survey were acquired in 1995 by the NSW Government, and consisted of 51199 line-kilometres of data at 250m line spacing and 60m 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形态。本次测量中，为支撑航空磁测与放射性测量作业，研究人员依托高度计及全球定位系统（Global Positioning System，GPS）传感器计算得到本套高程数据。该高程为相对于澳大利亚大地基准面GDA94（AUSGEOID09）的海拔高度。经处理的高程数据已由GA地球物理学家完成质量核查，以确保GA对外发布的最终数据满足使用要求。本次测线数据集源自新南威尔士州矿产资源局（NSW DMR）1994-1995年度“Discovery 2000”项目F区布鲁阿瑞纳（Brewarrina）测量工作，由新南威尔士州政府于1995年采集完成，总测线长度达51199千米，测线间距为250米，作业离地高度为60米。