Marine Radar

Written by Norene Anderson
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Marine radar has been used to prevent collisions between ships for a long time. It is also a guide when a ship is approaching the shore. It is vital in active shipping lanes. Radar works by sending out radio waves from an antenna that has quick directional ability. It then detects and calculates the reflected waves and determines the distance and direction to the target.

Nighttime or fog does not hinder the accuracy of marine radar. It can find ships or other obstacles which is vital to avoiding calamities on the water. There are several types and models of radar. One is a multifunction navigation display for use as a single station. This is used for such things as fishfinder, chartplotter, or radar. It has inputs for GPS receivers.

Marine Radar Facts

Marine radar is either X-band or S-band. Most ships have both, but small vessels have the X-band units which are smaller. The frequency of the X-band radar is about 9.4 GHz with a wavelength of 3.2 cm and S-band is about 3 GHz with a longer wavelength of 10 cm. There is a greater resolution in X-band, but is more apt to have interference from clutter such as rain. The S-band is less likely to be bothered with interference.

It is possible to create a digital fishfinder or chartplotter. It is growing in popularity for small boats. For more information, check out the Internet. With just a few clicks of the mouse, you can find all the information you need to make an informed decision about radar and what it can do for you as a fish finder or chart plotter aid.


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