低轨卫星LEO通信系统的多普勒频移估计，通过该程序可以画出多普勒频移的S曲线，可以观测处最大的多普勒频移以及变化率-LEO LEO satellite communication system of the Doppler frequency shift is estimated that the program can be drawn through the Doppler shift of the S curve can be observed to be the highest Dopp

动画变动三角形！三角形下面两个角可以互换。而且点击率高了。变换频率加快-Triangles change the animation! Angle of the triangle the following two are interchangeable. And click rate was. Accelerate the transformation frequency