But, usually, detecting of the gauge with pointer is by manual work, after long time for vision work, eyes will get tired, and this leads to low detecting precision and long detectingperiod.
With the radar, detecting aircraft velocity changes requires tracking the received data and can only be detected over a period of several position updates.
使用雷达的话 探测飞行器的速度变化要求跟踪监测所接收的数据 并且只能在几次位置更新后探测到。
3
Through detecting the same edge in one period of Phase a to judge its direction of rotation precisely, a method for error-free measurement has been given.