What is difference between Ground stabilization & Sea Stabilization of radar ?
In ground stabilization mode true motion display of Radar is used & the Course & Speed is fed from GPS, hence the fixed objects on the PPI remain stationary.
The movement of all moving objects is their movement over ground (COG & SOG).
It is used for collision avoidance with fixed objects.
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.
The movement of own vessel, fixed object & moving object is their movement through the water.
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