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A typical shipboard ARPA/radar system. A marine radar with automatic radar plotting aid (ARPA) capability can create tracks using radar contacts. [1] [2] The system can calculate the tracked object's course, speed and closest point of approach [3] (CPA), thereby knowing if there is a danger of collision with the other ship or landmass.
Mini-automatic radar plotting aid (or MARPA) is a maritime radar feature for target tracking and collision avoidance. Targets must be manually selected, but are then tracked automatically, including range, bearing, target speed, target direction (course), CPA (closest point of approach), and TCPA (time of closest point of approach), safe or dangerous indication, and proximity alarm.
Visual observation (e.g., unaided, binoculars, and night vision), audio exchanges (e.g., whistle, horns, and VHF radio), and radar or automatic radar plotting aid are historically used for this purpose. These preventive mechanisms sometimes fail due to time delays, radar limitations, miscalculations, and display malfunctions, and can result in ...
Pages in category "Radar" ... ASV radar; Automatic radar plotting aid; Aviation transponder interrogation modes; B. Barker code; Bioradiolocation; Bistatic imaging;
Radar ranges and bearings can be very useful for navigation. Radar navigation is the utilization of marine and aviation radar systems for vessel and aircraft navigation.When a craft is within radar range of land or special radar aids to navigation, the navigator can take distances and angular bearings to charted objects and use these to establish arcs of position and lines of position on a ...
The system included bridge control, power management, load condition monitoring, and the first ever computer-controlled, radar-sensed anti-collision system (Automatic Radar Plotting Aid). Taimyr' s Nord-1 turned out reliable for the time, with more than a year between failures.
The fuel and lubricant oil consumption are 4% less than in a comparable ship. Her bridge equipment includes an Automatic Identification System (AIS), GPS, Differential GPS (dGPS), an Automatic Radar Plotting Aid (ARPA), and an Electronic chart system (ECDIS) for automatically plotting the ship's position against charts. Computerized systems ...
The surface plot on a Cold War era British warship. In naval terminology, a plot is a graphic display that shows all collated data from a ship's on-board sensors, i.e. radar, sonar and EW systems. They also displayed information from external sources - for example, other vessel or aircraft reports.