Batemans Bay-Narooma, NSW, 1998 (P746), 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 Batemans Bay-Narooma, NSW, 1998 survey were acquired in 1998 by the NSW Government, and consisted of 7792 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。本次高程数据由本次航空磁测与放射性测量所配套的高度计及全球定位系统（Global Positioning System，GPS）传感器解算得到。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澳大利亚地质科学局（Geoscience Australia，GA）的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要求。本次源自1998年新南威尔士州（New South Wales，NSW）贝特曼斯湾-纳鲁马地区勘测的航线数据集，由新南威尔士州政府于1998年采集完成，总数据长度达7792线公里，航线间距为250米，地形离地飞行高度为60米。