Performance Analysis of GNSS Multi-system Short Baseline Positioning Considering IFB
To compensate for the shortcomings of estimating inter frequency biases ( IFB) parameters in short baseline relative positioning research,based on several days short baseline observation data,a linear function IFB parameter estimation method was used to analyze the ap-plication of IFB parameter estimation method in GNSS multi-system combination short baseline positioning. The experimental results show that estimating IFB parameters can effectively improve the positioning accuracy of GNSS multi-system short baseline positioning,with the Galileo/GLONASS combination positioning accuracy being the most significantly improved. The improvement of positioning accuracy for other combi-nations is between 5％ and 15％,which can provide some reference for future GNSS multi-system short baseline positioning solution parameter setting.
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