旋转因子生成余弦交流信号过程。体现旋转因子向量在转动过程中，实轴投影随时间改变生成余弦波。-presents the process that rotation factor circumvolves to generate cosin signal.

上传5篇分别采用投影追踪回归、最小二乘支持向量机、卡尔曼滤波做预测的研究论文，希望能对预测思路有所启发。-Five papers using Projection Pursuit Regression，LSSVM, Kalman filter respectively for forecasting

利用VB实现墨卡托投影和大圆航线经纬网的简单绘制。实现功能较简单，为课程作业时所写，需要的可以在其基础上进行完善。-Using VB to Realize the Mecato Projection and the Simple Drawing of the Large Diameter Line. The realization of the function is relatively simple, for the course to write, you need to be based