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将高斯过程方法应用到精密卫星钟差加密中,通过选择合适的核函数,将5 min间隔的钟差数据插值到30 s间隔。将结果与IGS提供的30 s精密钟差数据和四阶多项式拟合插值方法得到的结果进行比较,结果表明,高斯过程方法具有较高的加密精度,适用于GPS所有在轨卫星的原子钟钟差的加密,达到厘米级精度。 更多还原

【Abstract】 The Gaussian processes(GP) method is used to densify the 5 min interval clock errors to 30 s interval with a suitable kernel function.The densification results are compared with the IGS data and the densified clock errors using the four order polynomial interpolation method.The results indicate that the GP method can provide high densification precision and is applicable to densify the clock errors of all GPS on-board atom clocks.The accuracy is up to the centimeter level. 更多还原