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

一个用R语言写的trend follower strategy的案例，运行时将demoData.R放在工作目录下或者设置读取路径-The indicator will be generated by R’s lag() function. The signal will be to go long(short) if the price is higher(lower) than it was a year ago. In order to equalize risk across instru