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。
The series control with the velocity loop and the position loop is an effective design method in the electro-optical tracking system which requires short respond time and little tracking error.
在光电实时跟踪系统中要求响应的时间短、跟踪误差小，采用速度环和位置环的串级控制是一种有效的设计方法。
The velocity and acceleration of target are necessary parameters to forecast the target's dimensional position, and have important value to capture continuously for photoelectrical tracking equipment.
目标的运动速度、加速度，是估计目标后续空间位置必需的重要参数，对光电设备持续捕获目标具有重要现实意义。
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