Palm GPS can rapidly and accurately conduct field location-survey to get engineering mapping and conduct boat measurement annotation, widely used in daily life.
掌上型GPS可以快捷准确地进行野外实地查勘获工程测绘，以及船测调绘作业，在生产与生活中得到了广泛的应用。
It is complicated procedures that how to transfer the location of GPS to accurate survey point on sea-bed in geographic coordinate system.
如何将GPS位置实时推算至海底地形点位置、获取海底测点在地理坐标系中的精确位置是一套十分复杂的计算过程。
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