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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.
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.
Pages in category "Radar" The following 151 pages are in this category, out of 151 total. ... Mini-automatic radar plotting aid; MISTRAM; MIT Radiation Laboratory;
Mini-automatic radar plotting aid; Earley parser, one variant of which is the Marpa parser This page was last edited on 27 September 2019, at 13:26 (UTC). Text is ...
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.
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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.
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