利用GPS提供的 位置和INS输出的位置作为观测量，并进行卡尔曼滤波，已经调试过，可以直接运行，值得下载-GPS provides the location and use of INS output position as observations and Kalman filtering, has been debugged, you can directly run, it is worth downloading! !

针对GPS观测的数据进行卡尔曼滤波平滑处理，提高了解算的精度并绘制出三个方向的滑动示意图(According to the data of GPS observation, the Calman filter is processed to improve the precision of calculation, and the sliding diagram of three directions is plotted)