GPS卫星覆盖及定点定位精度的研究

A study on the coverage of GPS satellites and positioning accuracy at a fixed point

在大连水产学院导航实验室对GPS卫星覆盖情况及定点定位精度的研究结果表明:GPS卫星每天的二维和三维定位时间分别占全天的82.8％～92.3％和55.0％～74.3％,覆盖情况良好。其中:二维定位的95％或然圆半径为14.72m;三维定位时高度的95％或然区为22.54m。

A study on the coverage of GPS satellites and positioning accuracy at a fixed point was carried on in Dalian Fisheries College.The result shows that the GPS satellites' 2D and 3D daily positioning time covers 82.8% -92.3% and 55.0% -74.3% of the 24 hours respectively.The GPS positioning accuracy at the fixed point was also analyzed by processing the data gained from the laboratory observation.