中文摘要：

针对Jason-2卫星定轨中关于多普勒无线电定轨定位系统（DORIS）和卫星激光测距（SLR）随机模型研究的不足,该文提出了3类k阶差分算子通用递推公式及相应的差分算子观测噪声估计方法。利用电离层平静和异常两个时段的Jason-2卫星DORIS和SLR多站数据进行了应用研究,计算结果验证了所提方法的正确性。同时分析了DORIS和SLR观测噪声随卫星高度角的变化规律以及观测噪声时的相关特性,并指出了3类差分算子的适用性。

英文摘要：

Aiming at the deficiency in stidy on DORIS and SLR stochastic model in orbit detenmination for the Jason-2satellite,three k-order difference operators with general recurrence formulas were proposed and observation noise estimation methods was derived from stochastic model hypothesis and three operators mentioned above.Then,using Jason-2DORIS and SLR observations with both normal and abnormal ionosphere state of several beacon stations,the Jason-2observation noise evaluation experiments were implemented to test the validity of difference operators and noise estimation methods.The results verified the validity and applicability of the proposed method.Moreover,both the observation time correlation and the correlation of observation noise and satellite elevation angle were analyzed though the experiments.