SRTM1 (.HGT) FILES DOWNLOADER FOR GPS NAVIGATORS AND MAP VIEWERS
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In order to visualize maps in 3D, and to obtain accurate info about the height of a given point at a map, GPS navigation and map viewing apps need digital elevation models (DEM).
DEM1 eases the download of those models in SRTM standard (.hgt extension), wich is used to several apps, like OruxMaps. The data downloaded by DEM1 are, specifically, in SRTM1 standard, what means that its resolution is the best available at the moment in this format (1 arcsecond, or ~100 feet) which is much better than the commonly downloaded by other apps, in SRTM3 standard (3 arcsecond, or ~300 feet).
The advantages of using such precise data are evident. Often, when we are planning a route at home, we don't have a precise perception of our track's profile, something vital if we practise mountain bike or trekking. Other times, we found ourselves in the middle of the mountain, with mist, and equipped with a GPS navigator with a map that doesn't include accurate contour lines (like ortophotos, most of the online maps and several offline).
Differences between SRTM1 and SRTM3 are obvious, and easily appreciable opening a map in any viewer, switching from a SRTM3 and a SRTM1 DEM.
Complete World coverage.
SRTM1（.HGT）文件下载器GPS导航地图和观众
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为了在可视化3D地图，并获得有关给定的点在地图，GPS导航和地图应用程序观看的高度准确的信息需要数字高程模型（DEM）。
DEM1简化的SRTM标准（.hgt扩展）这些模型的下载，至极用于几个应用程序，如OruxMaps。通过DEM1下载的数据是，具体而言，在SRTM1标准，用什么方法，其分辨率是可用的最佳的时刻在该格式（1弧秒，或约100英尺），它比通常由其他应用程序下载要好得多，在SRTM3标准（3角秒，或约300英尺）。
使用这样的精确的数据的优点是显而易见的。通常情况下，当我们正计划在家里的路线，我们没有一个精确的看法我们跟踪的轮廓，东西，如果我们练习山地自行车或徒步旅行至关重要。其他时候，我们发现自己在山的中间，有薄雾，并配备了一个地图GPS导航仪不包括精确的轮廓线（如ortophotos，大部分在线地图和离线数）。
SRTM1和SRTM3之间的差异是显而易见的，而且很容易在可观的观众任何打开地图，从SRTM3和SRTM1 DEM切换。
完整的世界覆盖。

v.2.2: Some bugs solved.