中文摘要：

基于纠缠光子对二阶相关函数的时间特性分析,设计时钟同步测量方案,并考虑传播过程中色散效应及衰减等对精度的影响。该方案可提供均值1ns、精度0.01ns的同步信息。利用该方案获得观测数据,结合顾及哈达玛方差的抗差卡尔曼方法估计出卫星钟差模型系数,进行钟差预测。仿真表明,该方案预测精度与IGS预报星历产品精度相当,且钟差初始值更精确。

英文摘要：

Satellite clock offset prediction is a key technique in satellite navigation systems.The second-order correlation function of the entangled photon pairs is investigated and a clock synchronization scheme is proposed based on the temporal correlation of the function.Furthermore,the effects of chromatic dispersion and attenuation factors in propagation are incorporated.The results indicate that the scheme can provide synchronization information and that its modeling error is 1ns with an accuracy of 0.01ns.The parameters in the clock offset model are estimated by Robust Kalman filtering,and the covariance is estimated by using total Hadamard variance along with the observed values provided by the synchronization scheme.The simulation indicates that the scheme can provide prediction accuracy equivalent to IGS ultra-rapid products and that the initial value is close to IGS final products.