Hickman Crater, WA, 2011 (P1233), 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 South Pilbara, Hickman Crater, WA, 2011 survey were acquired in 2012 by the WA Government, and consisted of 134742 line-kilometres of data at 400m 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。本次高程数据由本次航空磁测与放射性测量作业所配套使用的高度计及全球定位系统（Global Positioning System，GPS）传感器计算得到。该高程值以澳大利亚高程基准面GDA94（AUSGEOID09）为基准。经处理后的高程数据由GA地球物理学家开展质量核查，以确保GA发布的最终数据符合使用需求。该测线数据集源自2011年开展的西澳大利亚州（Western Australia）南皮尔巴拉地区希克曼陨石坑调查项目，由西澳大利亚州政府于2012年完成数据采集，总测线长度达134742测线公里，测线布设间距为400米，作业地形离地高度为60米。