中文摘要：

提出了将电离层改正量作为虚拟观测值,参数估计随机模型顾及电离层改正量先验信息的高精度单频单点定位新方法,并推导出该方法的数学模型。实测数据解算定位结果表明,新方法能够实现中国高、中、低纬区域的无初始化高精度单频单点定位,其平面精度为0.1-0.2 m,高程精度为0.3-0.5 m。

英文摘要：

Promote a new single-frequency point positioning method with the ionosphere delay correction as a virtual observation and taking the statistic information of the ionosphere delay correction into consideration in the parameter estimation stochastic model,and build the mathematic model of this method.Analyze the differences and similarities between this solution and two other solutions depending on ionosphere grid model and GRAPHIC combination respectively.The experiment result shows that position accuracy of 0.1~0.2 m for the horizontal and 0.3~0.5 m for the vertical can be realized without converge of the whole China.