不同长度基线的电离层处理策略

The treatment strategy of ionosphere delay with difference-lengths baseline

针对不同长度的基线,受双差之后电离层延迟影响不同,提出一种新的电离层处理策略。对短、中、长基线处理分别采用3种不同的数学模型:电离层固定模型,电离层加权模型,电离层浮点模型。通过3组不同长度基线实测数据处理表明,对应不同长度的基线,文中策略可以有效地提高模糊度固定率及定位精度。

As to different-lengths baseline, differently affected by double-difference ionosphere delay, a new treatment strategy of ionosphere is proposed. Three different mathematical models are used for short, medium and long baseline： ionosphere-fixed model, ionosphere-weighted model and ionosphere-float model. The three different-lengths baseline data measured show that： this strategy can improve the ambiguity-fixed rate and positioning accuracy for different-lengths baseline.