In consideration that the existed lunar projects are mainly in polar orbiter, a simulation analysis about the contribution of tracking data from big inclination orbiter is presented. The gravity recovery is processed for polar orbiter, 77° inclination orbiter, combination of polar and 77° inclination orbiter in three months respectively, the accuracy is estimated by gravity field power spectrum, gravity anomaly and selenoid error based on covariance matrix from gravity field solution, and precise orbit determination. It is shown that after combining the 77° inclination, the gravity field accuracy can be improved significantly.%本文针对已有月球探测任务主要为极轨的特点,仿真分析了大倾角轨道卫星跟踪数据在月球重力场解算中的贡献.文中针对极轨道、77°倾角和极轨道结合77°倾角轨道三种情况各三个月的轨道跟踪数据进行了月球重力场模型仿真解算,通过重力场功率谱、基于解算模型位系数协方差矩阵的重力异常及月球大地水准面误差以及精密定轨等手段对解算模型进行了精度评价.结果表明结合大倾角的轨道可以较为明显地改进月球重力场模型的计算精度.
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