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manual:advanced:locus_api:tips [2015/09/07 17:43] – mstupka | manual:advanced:locus_api:tips [2016/02/22 11:41] (current) – mstupka | ||
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- | ====== Tips For Developers ====== | + | {{ : |
+ | |||
+ | ---- | ||
On this page we would like to collect all nice and possible ideas on add-ons. | On this page we would like to collect all nice and possible ideas on add-ons. | ||
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* [[https:// | * [[https:// | ||
* [[https:// | * [[https:// | ||
+ | ===== AIS/NMEA for the sea sailors ===== | ||
+ | The **Automatic Identification System** (AIS) is an automatic tracking system used on ships and by vessel traffic services (VTS) for identifying and locating vessels by electronically exchanging data with other nearby ships, AIS base stations, and satellites. When satellites are used to detect AIS signatures then the term Satellite-AIS (S-AIS) is used. AIS information supplements marine radar, which continues to be the primary method of collision avoidance for water transport. | ||
+ | |||
+ | Information provided by AIS equipment, such as unique identification, | ||
+ | |||
+ | Further reading on [[https:// | ||
+ | |||
+ | The information is coded into AIS/NMEA sentences: | ||
+ | |||
+ | * [[http:// | ||
+ | * [[http:// | ||
+ | |||
+ | There are some open source decoder libraries on the net, e.g. | ||
+ | |||
+ | * [[https:// | ||
+ | |||
+ | **Basic implementation** should cover the following aspects: | ||
+ | |||
+ | * Connect to a NMEA data stream provided via TCP/IP | ||
+ | * Decode the NMEA stream | ||
+ | * Visualise the AIS targets (ships) on the map and update their position/ | ||
+ | |||
+ | A **more thorough** implementation might cover the following features: | ||
+ | |||
+ | * plot the track of moving ships | ||
+ | * provide a list of current targets with their speed, course and position | ||
+ | |||
+ | The **last step** might be: | ||
+ | * Calculate the possibility of a collision with one of the current ships (position and time of collision) | ||
+ | * Provide some filter functions to declutter the list of targets |