Cape Leeuwin, WA, 2011 (P1244), 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 West (Cape Leeuwin - Collie), WA, 2011 survey were acquired in 2011 by the WA Government, and consisted of 101882 line-kilometres of data at a line spacing between 200m and 400m, and 50m 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。本次所用高程数据，通过服务于本次航空磁测与航空放射性数据采集的高度计及全球定位系统（Global Positioning System, GPS）传感器计算得到。该高程为相对于澳大利亚高程基准GDA94（AUSGEOID09）的相对高度。经处理的高程数据将由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。该航线数据集源自2011年西澳大利亚州（Western Australia, 简称WA）西南区域（卢因角-科利）的测量任务，由西澳大利亚州政府于2011年采集完成，总数据量达101882线公里，航线间距介于200米至400米之间，地形飞行离地高度为50米。