一种机载GPS高速率定位数据输出算法

为满足高动态环境的需要 ,提出了一种适用于机载全球定位系统 (GPS)高速率定位数据输出的算法。该算法先对GPS数据进行抑制随机误差的预处理 ,再用三次样条函数进行插值或逼近 ,通过样条函数的表示 ,实现任意速率的输出。该方法可以在事后处理中弥补GPS数据输出速率低的不足 ,由于利用了载机运动特性的先验信息 ,因此输出参数精度比传统的插值方法要高。仿真结果表明了本算法的正确性和有效性

An Algorithm for High Update-Rate Output of Airborne GPS

In order to suit the demand of high dynamic environment, an algorithm for airborne global position system (GPS) is presented. By using linear, unbiased and least variance smoothing formula and cubic spline function, this method can restrain the random noise and improve the output data rate of the GPS. Compared with traditional method, the algorithm uses the dynamic information of the airplane in advance, and thus has higher accuracy. The simulation testifies the correction of the algorithm.