Author(s)

Chaopan Yang ¹, Ye Yu ¹, Weimin Jia ¹, Guodong Jin ¹, Yihong Li ¹, Wei Jin ¹, Jianwei Zhao ¹

Affiliation(s)

¹ Rocket Force University of Engineering, Xi'an, 710025, Shaanxi, China

Corresponding Author

Ye Yu

ABSTRACT

The satellite clock bias (SCB) with high sampling rate is needed in precise point positioning, and the sampling interval of SCB provided by the analysis center is relatively large, so SCB with large interval must be interpolated and encrypted by interpolation methods. Three interpolation methods are used to interpolate SCB from 5-minute sampling intervals to 30-second sampling intervals, and the interpolated results are compared and analyzed with the published SCB for 30-second sampling intervals. The results show that the accuracy of linear interpolation method is the highest, followed by cubic spline interpolation method and then Lagrange interpolation method. In addition, the interpolation accuracy of the three interpolation methods is the highest for GPS IIF and IIIA satellites launched in recent years, followed by IIR-M satellites launched in the middle of the period, and then IIR satellites launched in the early period.

KEYWORDS

Satellite clock bias (SCB); linear interpolation; cubic spline interpolation; Lagrange interpolation; interpolation accuracy

CITE THIS PAPER

Chaopan Yang, Ye Yu, Weimin Jia, Guodong Jin, Yihong Li, Wei Jin, Jianwei Zhao, Comparison and Accuracy Analysis of Several Satellite Clock Bias Interpolation Methods for Precise Point Positioning. Geoscience and Remote Sensing (2025) Vol. 8: 11-20. DOI: http://dx.doi.org/10.23977/geors.2025.080102.

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