海潮对高精度GPS网的影响初探

本文叙述了海洋负荷潮改正的基本原理，结合算例分析了海潮对GPS网的影响，结果显示：对于近海地区较短时段的GPS观测，考虑海潮负荷改正可以明显地提高解算精度，特别对改善高程方向的精度贡献明显。影响可达数厘米，这种影响的量级对水平方向不明显；对于远离海洋地区，海潮负荷改正的影响已不明显，可以不与考虑。

Preliminary Study of the Influence of Ocean Tides on High Accuracy GPS Network

In this paper , the basic principle of the correction for oceanic load tides is described. The influences of ocean tides on GPS network are analyzed based on examination. The results indicate that in case of short - time GPS surveying in inshore area , adding correction of oceanic load tides can obviously improve the positioning accuracy , especially for the vertical accuracy up to centimeters , but not obvious for horizontal accuracy. In the area far from the ocean , the ocean tides influence is too slight to consider.