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Radars are rarely used alone in a marine setting. A modern trend is the integration of radar with other navigation displays on a single screen, as it becomes quite distracting to look at several different screens. Therefore, displays can often overlay an electronic GPS navigation chart of ship position, and a sonar display, on the radar display ...
The first product was a combined marine receiver and direction finder, for yachts and small boats. From there, the company designed and manufactured products for the marine electronics market, including communications receivers, Navtex receivers, radar detectors, transponders and emergency position indicating radio beacons (EPIRBs).
In 2003 Simrad Yachting acquired B&G. In 2005 Altor 2003 Fund acquired Simrad Yachting AS from Kongsberg Group. In 2006 Altor 2003 Fund acquired Lowrance Electronics. Also in 2006, Navico was created through the merger of Simrad Yachting and Lowrance Electronics by their common owners, Altor Equity Partners, a Swedish private equity firm.
The top manufacturer is Garmin's Marine division with a turnover of US$917 Million in 2023 [8] followed by Brunswick-owned Navico Group (Simrad, Lowrance, B&G and several other brands), with a turnover of US$915 Million (although this includes sales of equipment which is not marine electronics, such as batteries, cables and pumps).
AN/SPS-55 2D surface search radar [52] AN/APS-57 Small boats navigational radar by Ridge Electronics. [53] AN/SPS-58 Low altitude 2D air search radar [52] AN/SPS-59 Military designation for the LN-66 short-range navigation radar manufactured by Marconi of Canada. In service in many US Navy ships as well as in the SH-2F LAMPS I ASW helicopter.
Marine radars are used by ships for collision avoidance and navigation purposes. The frequency band of radar used on most ships is X band (9 GHz/3 cm), but S band (3 GHz/10 cm) radar is also installed on most oceangoing ships to provide better detection of ships in rough sea and heavy rain condition.
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Racons usually operate on the 9320 MHz to 9500 MHz marine radar band , and most also operate on the 2920 MHz to 3100 MHz marine radar band . Modern racons are frequency-agile ; they have a wide-band receiver that detects the incoming radar pulse, tunes the transmitter and responds with a 25 microsecond long signal within 700 nanoseconds .
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