最新DTM与DEM Pleiades在泥炭地动态监测中的比较

2020 3rd International Seminar on Research of Information Technology and Intelligent Systems (ISRITI) Pub Date : 2020-12-10 DOI:10.1109/ISRITI51436.2020.9315410

A. Julzarika, T. Aditya, Subaryono, Harintaka

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引用次数: 1

摘要

监测泥炭地动态需要DEM。目前，可用的免费dem垂直精度较低，而且不是最新的。商用ddm具有高分辨率，但价格昂贵。DEM Pleiades是商业DEM的一个例子。克服这个问题的一个解决方案是使用最新的DTM，它具有最新的优点。本研究旨在比较最新DTM与DEM Pleiades在泥炭地的垂直精度。研究区域位于“Palangkaraya-Pulang Pisau”边界的泥炭地。这个地区地势比较平坦。最新的DTM是由InSAR ALOS PALSAR/PALSAR-2和DInSAR Sentinel组合提取的。最新的DTM是DTM大师与最新位移的集成。最新DTM的垂直精度需要在空间分辨率为0.5 m的DEM Pleiades数据和使用GNSS的现场测量数据上进行测试。DEM Pleiades，最新的DTM，以及使用EGM 2008作为高度参考场的现场测量。提取并调整了15个野外测点的DEM Pleiades和最新DTM的高度数据。得到的结果为昴星团DEM与最新DTM的平均高差为0.923 m。DEM Pleaides与野外测量的平均高差为0.557 m。最新DTM与现场测量的平均高度差为0.705 m。在此基础上，利用Pleiades DEM上的15个实测点和最新DTM进行了纵剖面分析。结果表明，与最新的DTM相比，DEM Pleiades的高度误差仍然较大。最新的DTM可以替代DEM Pleaides进行相对平坦地形的泥炭地测绘。

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Comparison of the Latest DTM with DEM Pleiades in Monitoring the Dynamic Peatland

DEM is needed for monitoring peatland dynamics. Currently, available free DEMs have low vertical accuracy and are not up to date. Commercial DEMs have high resolution but is expensive. DEM Pleiades is an example of a commercial DEM. One solution to overcome this problem is to use the latest DTM, which has the advantage of being up to date. This study aims to compare the vertical accuracy of the latest DTM with DEM Pleiades on peatlands. The study area is located on the peatlands of the “Palangkaraya-Pulang Pisau” border. This region has relatively flat topography. The latest DTM is extracted from a combination of InSAR ALOS PALSAR/PALSAR-2 and DInSAR Sentinel. The latest DTM is the integration of the DTM master with the latest displacement. The vertical accuracy of the latest DTM needs to be tested on the DEM Pleiades data with a spatial resolution of 0.5 m and field measurement data using GNSS. DEM Pleiades, the latest DTM, and field measurements using the EGM 2008 for the height reference field. The height data on the DEM Pleiades and the latest DTM were extracted and adjusted for 15 field measurement points. The result obtained is the mean height differences between DEM Pleiades and the latest DTM which is ammounting 0.923 m. The mean height differences between DEM Pleaides and field measurements is 0.557 m. The mean height differences between the latest DTM and field measurements is 0.705 m. Furthermore, a longitudinal profile is made according to 15 field measurement points on the DEM Pleiades and the latest DTM. The results obtained are that DEM Pleiades still has more height errors than the latest DTM. The latest DTM can be an alternative to DEM Pleaides for peatlands mapping with relatively flat topography.

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2020 3rd International Seminar on Research of Information Technology and Intelligent Systems (ISRITI)

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