USES OF MARINE RADARS
By Major ( R ) Ir . Suhaizad Hj Sulaiman Cawangan Kejuruteraan Infrastruktur Pengangkutan JKR Malaysia
FEATURE
WARTSILA Nacos Radar System
Radar or " radio detection and ranging " is a detection system that uses radio waves to determine the location , range , velocity or angle of objects . It can be used to detect weather formations , aircraft , ships , guided missiles , motor vehicles and terrain . A radar system consists of a transmitter producing electromagnetic waves in the radio or microwave domain , a transmitting antenna , a receiving antenna ( often the same antenna is used for transmitting and receiving ), and a receiver with processor system to determine the properties of objects . Radio waves ( either pulsed or continuous ) from the transmitter reflect off the object and return to the receiver , giving information about the object ' s location and speed . There are two types of radar which are primary radar and secondary radar . The primary radar provides information on the location and range of objects . While the secondary radar provides information on the altitude of objects .
Marine Radar
A marine radar is used to measure the bearing and distance of ships to prevent collision with other ships , to navigate and to fix their position at sea when within range of shore or other fixed references such as islands , buoys and lightships . In navigation , bearing is the horizontal angle between the direction of an object and another object or between it and that of true north . In a port or harbour , vessel traffic service radar systems are used to monitor and regulate ship movements in
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