采用dsp汇编编写正交编码程序，可以应用于位移与速度测量中-compilation prepared using dsp orthogonal coding procedures can be applied to displacement and velocity measurement

实现在以gps为起点的情况下，组合导航实现航位推算，计算物体的速度和角速度，从而得出物体的距离和航向。-Gps as a starting point in order to achieve the case, dead reckoning navigation to achieve calculation speed and angular velocity of the object to draw the object distance and course.

The parameters such as source velocity and outage probability play very important role in the performance analysis and design of the digital communication systems over the multipath fading environment.