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对目前存在的在线免费PPP软件进行了介绍,并用实际算例对这些在线免费PPP软件进行了测试,综合比较了在线免费PPP软件的特点,分析其精度特性,得出了一些值得参考的结论。 更多还原

【Abstract】 Sets of online free Precise Point Positioning(PPP) software are introduced in this article,and a complete test of these sets of software is presented in this paper.In the test,the characteristics of these sets of online free software are compared,and the precision of these sets of software is analyzed.And some reference conclusions are deduced as well. 更多还原