If that distance doesn't change within a given period of time, the navigation computer knows that your foot is stationary.
如果距离在一定的时间内没有改变,那么导航电脑就会知道你是静止的。
2
Divided periodStationary Autoregressive model for daily flow of Pingshan hydrological station is established in this paper. Daily flow procedure during 5200 years is simulated to test this model.