![]() SRTM utilizes satellite data, where as Light Detection and Ranging (LiDAR)is an optical remote sensing technology used to collect a wide range of topographic data. It should be noted that when it comes to SRTM, forest covers may not matter so much as compared to the method accuracy. There is also a study on the accuracy of different global topographic data in Borneo, readers can check out the report here. Source: The Shuttle Radar Topography Mission. In Malaysia, the vertical accuracy ( both absolute and relative) stands at between 6-9 m, as shown below: The accuracy of SRTM data. The accuracy of SRTM Data can range from 5 to 10 meter, depending on where you are. However, Google Earth improved the results by using (in house) interpolation algorithms to mix and mesh SRTM data with other data in order to derive accurate results for these area. The elevation datasets are affected by mountain and desert no-data areas, thus the results could be inaccurate if the voids are large or the voids are completely covering summit or ridge area. Two radar antennas were outfitted in order to capture the topographic data. In 2009, SRTM consisted of a specially modified radar system that flew on board the Space Shuttle Endeavour during the 11-day STS-99 mission. SRTM stands for Shuttle Radar Topography Mission. Methods for Obtaining Elevation Levels # SRTM Data # Naturally, the question is, how accurate is Google Earth Elevation import, and given the range of validity, what can we use it for?īefore we tackle this issue, we need to understand what are the different ways one can obtain elevation levels. MiTS 2 has a function called Google Earth Elevation Import, that allows you to read the elevation points directly from Google Earth, without relying on Surveyor’s input. ![]()
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