数据更新率是指GPS设备接收到的数据更新速度，一般都是1次/秒为单位来刷新的。
在此算法的基础上增加对数据更新率及大小的判断并对所选数据排序，然后进行预取数据的选择。
In this paper, this algorithm was based on the data update rate and it increased the size of the selected data to determine and sort, then made the choice of the prefetching data.
因此，GPS与SINS组合姿态测量系统，既可以满足系统精度要求，降低成本，又提高了姿态数据更新率。
Therefore, GPS and SINS integrated attitude measurement system not only meets the accuracy requirements and lower costs, but also improves attitude data update rate.
同时，由于高动态环境下对数据更新率的要求，推导出轨道快速外推公式替代动力学方法来计算卫星的在轨位置。
At the same time, on the request to the data refresh rate in high dynamic environment, the paper deduces the rapid extrapolation algorithm of the orbit to replace dynamic model method.
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