中文摘要：

概要综述了确定卫星重力场恢复中的海洋负荷潮汐改正理论和精度估算问题。利用TPX06海潮模型计算了海潮对卫星重力恢复的影响，与GRACE观测误差实施了对比。结果说明海潮M2波对卫星重力场恢复的影响最大，并主要体现在40阶以下的位系数上。海潮模型误差对低阶卫星重力场恢复的影响也是比较明显的。相关结果可有效降低GRACE恢复的低价重力场位系数的潮汐成分，为我国相应的学科研究提供有效参考。

英文摘要：

The theory and error estimation of the influence of ocean tide on the determination of satellite gravity recovery are described briefly. Using the ocean tide model of TPXO6, the effect of ocean tide on gravity determination is investigated and compared with the error of recovered gravity by GRACE. The result shows that M2 constituent Of ocean tide contributes most and mainly to the potential coefficients of degrees below 40 and that the error of ocean tide also notably affects the gravity determination of low degrees. This result is adopted to reduce the tidal component in recovered gravity of low degrees and provides reference in relative studies.