GSWA Crossland Noonkanbah East Canning 1 GA Canning Basin (Onshore), WA, 2007 (P1151), 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 Canning Basin (Onshore), WA, 2007 survey were acquired in 2007 by the WA Government, and consisted of 103206 line-kilometres of data at 800m line spacing and 80m terrain clearance.

数字高程模型（Digital Elevation Model, DEM）用于表征已知高程点之间的地表地形。本次测量中，为配合航空磁测与放射性测量工作，研究人员采用高度计与全球定位系统（Global Positioning System, GPS）传感器采集数据，以此计算得到高程数据。该高程值以澳大利亚高程基准面GDA94（AUSGEOID09）为参考基准。经GA地球物理学家对处理后的高程数据开展质量核查，以确保GA发布的最终数据符合既定使用需求。这套来自西澳大利亚州2007年坎宁盆地（陆上）测量项目的测线数据集，由西澳大利亚州政府于2007年完成采集，总测线长度达103206测线公里，测线间距为800米，飞行离地高度为80米。