采集Motorola芯片观测量和星历二进制数据的子程序，在运行程序时需要设置此芯片能输出伪距和相位的观测量和卫星星历的工作状态。-Acquisition of the Motorola chip concept of measurement and ephemeris binary data subroutine, when running the program need to set up a working state of this chip can output pseudorange

这个程序是介绍如何利用广播星历参数计算某时刻t的卫星的位置。-This procedure describes how to use the broadcast ephemeris parameters to calculate the satellite location of a certain time t.