Cornish - Helena, WA, 2009 (East Canning 2) (P1207), 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 Cornish - Helena, WA, 2009 (East Canning 2) survey were acquired in 2009 by the WA Government, and consisted of 124002 line-kilometres of data at 400m line spacing and 60m terrain clearance.

数字高程模型（Digital Elevation Model）表示已知高程点之间的地表地形。高程数据通过高度计和全球定位系统（GPS）传感器计算得出，这些传感器用于同一测量任务中的航空磁测与辐射测量数据采集。高程基于澳大利亚高程基准GDA94（AUSGEOID09）。处理后的高程数据由GA地球物理学家进行质量检查，以确保GA发布的最终数据符合预期用途。

这些线数据集来自西澳大利亚州2009年Cornish-Helena（东坎宁2号）测量，由西澳政府于2009年获取，包含124002线公里的数据，线间距为400米，地形净空为60米。