中文摘要：

GPS连续运行站由于具有多种优势，所以在我国逐步建立，并开始得到广泛应用。但对于距离基准站较远，且位于基准站网一侧的情况下，该如何进行高精度的实时／快速卫星定位？本文给出了一种GPS网络差分方法，通过该方法可实现远海的高精度实时／快速GPS定位。最后，模拟远海应用情况进行实测试验，实验结果证明：在基准站距离200—300km的情况下，用户在距离基准站网400km一侧的范围内，采用双频机可实现优于2m的实时高精度定位，5min快速静态的水平精度优于1m，观测20min可到达优于0．5m的水平定位精度。

英文摘要：

More and more GPS continues operation reference stations （CORS） have been founded and applied widely in China. But how to perform precise real-time or fast positioning in extreme area that is far away from base station network and locate one side of available base station network？ In this paper, a method of GPS network difference was given. Several tests simulating high seas application were performed. The results of experiments prove that under the conditions of 200 -300km between base stations, the precision of real-time positioning about 400km faraway is better than 2m; the horizontal precision of 5-min fast positioning is better than 1.0m; and the horizontal precision of 20-min fast positioning is better than 0. 5m by dual-frequency receiver.