山东近海地区CORS系统定位性能的测试方法与分析

Positioning Performance of CORS System in Shandong Offshore Area Test Methods and Analysis

提出一种海洋应用场景下的导航定位性能评估方案,解决海上CORS站架设成本高、航行时间成本高等问题,为海上CORS系统定位性能测试提供新的解决方案。通过建立陆地网络模拟沿海地区组网条件,对不同基线距离下的初始化时间、固定率和定位精度指标进行测试。结果表明,当基线距离在50 km以内时,初始化时间短、固定率高且定位精度较优;当基线距离超过50 km时,定位精度逐渐下降,定位性能与PPP定位性能相近。

A navigation and positioning performance evaluation scheme for marine application scenarios was proposed,which solved the problems of high cost of setting up offshore CORS stations and high navigation time costs,and provided a new solution for testing the positioning performance of offshore CORS systems.By establishing a land network to simulate the networking conditions of coastal areas,the initialization time,fixation rate,and positioning accuracy at different baseline distances were tested.The results showed that when the baseline distance was within 50 km,the initialization time was short,the fixation rate was high,and the positioning accuracy was relatively good.When the baseline distance exceeded 50 km,the positioning accuracy gradually decreased,and the positioning performance was similar to PPP positioning performance.