雷达转换至相对运动北向上。

Change radar to relative north-up.

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雷达转换至相对运动船首向上。

Change radar to relative head-up.

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脉冲多普勒雷达是利用目标与雷达之间相对运动产生的多普勒效应实现测速功能的一种新型雷达。

Pulse Doppler radar is a new type of radar which uses the Doppler effect due to the relative movement between the object and the radar to measure the velocity of the object.

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