Mapping and Geopositioning Methods in Ice-Free Areas Antarctica

A. L. Schünemann, F. Victoria, M. P. D. Albuquerque, L. Roesch, A. Pereira
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Abstract

Mapping is an activity which can register the occurrence of phenomenons related to land cover. ere are several methods of map registry. In Antarctic areas, the mapping gives importance to registry of the land cover of plants in ice-free areas. e maps are tools to understand the dynamics of plants in those areas. e Global Navigation Satellite System (GNSS) is an important tool to reach this objective, such as the plotting of georeference points in any place in the world including Antarctic locations. is study aims to contribute to the research of mapping in ice-free areas making a comparison with map builds for Hennequin Point and Keller Peninsula at King George Island, Antarctica. e study was carried out using GNSS L1/L2 and L1 receivers to record points in ice-free areas with plant coverage and post processing using speci c so ware. e post processed data were exported to CAD so ware. With the points plotted, they were connected using polylines to draw the vegetation patches. e maps obtained were overlapped to identify the growth or retraction between the patches. e resulting maps are presented. e results show di erences between the patches sampled during di erent polar years. Probably, these divergences are due to the di erent methodologies used to obtain the points in these areas. To better understand these variations, we need to produce more maps of the same place, obtained with the same methodologies or compare them using Satellite Images with high spatial resolution.
南极洲无冰地区的测绘和地理定位方法
测绘是一项可以记录与土地覆盖有关的现象发生的活动。这里有几种地图注册的方法。在南极地区,绘制地图对记录无冰地区植物的土地覆盖具有重要意义。地图是了解这些地区植物动态的工具。e全球导航卫星系统(GNSS)是实现这一目标的重要工具,例如绘制世界上任何地方(包括南极地区)的地理参考点。他的研究旨在为无冰地区的制图研究做出贡献,并与南极洲乔治王岛的亨内昆点和凯勒半岛的地图进行比较。利用GNSS L1/L2和L1接收机在有植物覆盖的无冰区进行测点记录,并使用特定软件进行后处理。后处理数据导出到CAD软件中。用折线将这些点连接起来,绘制出植被斑块。将获得的E图重叠以确定斑块之间的生长或收缩。给出了E个结果图。结果显示不同极年取样的斑块之间存在差异。可能,这些差异是由于不同的方法用于获得这些区域的点。为了更好地理解这些变化,我们需要用相同的方法制作更多的同一地点的地图,或者使用高空间分辨率的卫星图像对它们进行比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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