针对在交会对接任务中测量船使用的电波折射经验模型存在低仰角跟踪测量修正精度差的问题提出改进思路,在模型中引入基于天顶延迟的拟合算法优化修正模型,提高了船载雷达低仰角跟踪时距离的修正精度,满足了测量船数据处理的精度需求。用新方法处理数据,计算的轨道根数半长轴外符合误差平均降低了605m,有效提高了测量船定轨精度。 Aiming at the problem that the model used in surveying ship in the rendezvous and docking mission has the problem of poor correction accuracy of low-elevation tracking measurement, an improved method is proposed. An optimized modified model based on zenith delay is introduced in the model, The correctness of the distance when the elevation angle is tracked satisfies the precision requirement of the data processing of the survey ship. With the new method to process the data, the calculated error of the semi-major axis of the number of tracks reduced by 605m on average, which effectively improved the accuracy of orbit determination.