长基线GPS电离层修正方法研究

Long range baseline GPS ionosphere correction method

针对双频GPS在长基线测量中精度要求高的问题,提出了采用双频修正法修正电离层延迟误差的方法,同时利用双频伪距观测值来进行周跳检测,经过电离层延迟误差修正和周跳检测,可有效提高GPS测量数据处理精度。试验数据处理结果表明,在长基线测量的情况下,文中修正后的方法较传统方法具有更高的精度。

Dual frequency GPS faces the problem of high accuracy requirement in long range baseline measurement. This paper puts forward the method to solve ionospheric delay error by using dual frequency correction and dual frequency pseudo range to detect cycle slip. The method can effectively improve the precision of GPS data processing. The experiment shows that the method in this paper has higher precision than traditional way.