Hyden North, WA, 1997 (P1078), 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 Hyden North, WA, 1997 survey were acquired in 1997 by the WA Government, and consisted of 5209 line-kilometres of data at 400m line spacing and 40m terrain clearance.

数字高程模型（Digital Elevation Model）表征了已知高程点之间的地表地形。本次高程数据通过高度计与全球定位系统（Global Positioning System，GPS）传感器计算得到，该传感器服务于本次勘测中的航空磁测与放射性测量工作。该高程为相对于澳大利亚高程基准面GDA94（AUSGEOID09）的高度值。经处理的高程数据由澳大利亚地球科学局（Geoscience Australia，GA）的地球物理学家开展质量校验，以确保GA发布的最终数据符合使用需求。本次测线数据集源自1997年西澳大利亚州政府开展的西澳大利亚州哈登北（Hyden North）勘测项目，由该州政府于同年采集完成，共包含5209测线公里的数据，测线间距为400米，地形离地高度为40米。