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What Is True Vector and Relative Vector?

Maya Lin-Takahashi • • 7 min read
What Is True Vector and Relative Vector?
When using a true vector, own ship and other ship moves at their true speed and course. True vectors can distinguish between moving and stationary targets. The relative vector helps to find ships on a collision course. A ship whose vector passes through own ship's position is on a collision course.

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Similarly, it is asked, what is true motion and relative motion?

True motion is the motion (speed and direction) that an object is moving with respect to the ground. Relative motion is the motion (speed and direction) that another object is moving with respect to your vessel.

One may also ask, what is sea stabilized radar? In sea stabilization mode relative motion display of radar is used & the Course is from Gyro course and speed is from log speed. Hence the fixed objects on the PPI appear to have a course & speed equal to the reverse course& speed of own vessel.

Besides, what is relative motion in radar?

There are two basic displays used to portray target position and motion on the PPI's of navigational radars. The relative motion display portrays the motion of a target relative to the motion of the observing ship. The true motion display portrays the actual or true motions of the target and the observing ship.

What are the errors of radar?

Among the factors producing errors in interpretation are: bearing resolution, range resolution, radar shadows, multiple echoes and false echoes. - Bearing resolution is the minimum difference in bearing between two targets at same range which can be seen clearly.

Related Question Answers

What is water speed?

Speed through water is the speed of the ship with respect to the water such as anything floating on water. A ship with her engine stopped in water with 2 knots currents will have zero speed through water but will have 2 knots speed over ground.

What is relative motion in Science?

Relative motion is the calculation of the motion of an object with regard to some other moving object. Thus, the motion is not calculated with reference to the earth, but is the velocity of the object in reference to the other moving object as if it were in a static state.
Maya Lin-Takahashi
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Maya Lin-Takahashi

Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.