My search for radar pm made me come here. A Radar (Radio Detection And Ranging) is an instrument that can detect surrounding objects using radio waves. The MarineTraffic service makes use of AIS tracking technology to provide information about the identification, course, speed and current location of vessels. Range and bearing are obtained by the fact that each component does a specific job at the correct time. They have no control over the effectiveness of the data supplied by other Ships AIS equipment, sometimes it can be of very poor quality. Enhanced Situational Awareness. Artwork: Radar before radar: Christian Hülsmeyer's Telemobiloskop predated radar by over three decades, but was essentially the same concept. How does Radar work What is a Radar? On our boat, radar is used even during clear weather and bright sunshine, because it enhances situational awareness, alerting us to the fast boat overtaking from astern or coming from an obtuse angle. A wide beam width (six degrees, for example) won’t penetrate nearly as far or pick up nearly as much as a tight two-degree beam. Although already invented, radar was further developed during World War II, with work on the technology stimulated by the threat of air attacks. Synthetic aperture radar is a way of creating an image using radio waves. I didn't get a chance to do Radar PM while onboard because of the busy schedule and lack of time. How Does Marine Radar Work? Radar beams work the same way. But the difference is that if a normal 5000 ton warship of 1000 m² RCS is detected at 100 km, a stealth design warship of 5000 tons and 200 m² RCS would be detected at the same distance, but will appear with a much smaller blip on the radar. Radar Units. Keep up the good work. How Does MarineTraffic Work? All radar works by emitting a high frequency radio wave, and then listening for any return signals that get bounced back. Stealth ships are in fact very much visible on radar. Seven Reasons You Need Radar Boating Magazine. How does radar work? Marine radar consists mainly of four units – the transmitter, the aerial or scanner, the receiver and the display unit. It contains no calculator or computer to do its basic function. From there, locations can be overlaid onto Google Maps and, as a result, users can use the service to track the movements of ships and other vessels in real-time. Thus, in the maritime world, objects such as ships, buoys or birds can be detected by Radars. The radio waves used in SAR typically range from approximately 3 cm up to a few meters in wavelength, which is much longer than the wavelength of visible light, used in making optical images. How Does Synthetic Aperture Radar Work? This artwork is based on a drawing from one of Hülsmeyer's 1904 patents showing how transmitting and receiving apparatus mounted on one ship could be used to detect other ships nearby. 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