A method for extracting fishing boat docking information in different places

Abstract

The invention relates to a fishing boat off-site berthing information extraction method which comprises the following steps: finding out berthing time periods from boat position observation data, recording starting positions and ending positions of the berthing time periods, and obtaining starting time and ending time of the berthing time periods according to the starting positions and the endingpositions; calculating the duration of the berthing time periods according to the starting time and the ending time of the berthing time periods, and arranging the berthing time periods according to the descending order of the berthing duration; extracting longitude and latitude coordinates of geographical positions of berthing from the first 10 berthing time periods according to the descending order of the berthing, sequentially obtaining each berthing time period according to the sequence, and obtaining provinces, cities and districts and counties to which the berthing ships belong by adopting an inverse address query mode; and storing the obtained provinces, cities and districts and counties to which the berthing areas belong into a database, and finding out ships berthing in differentplaces. The off-site berthing of the fishing boat can be extracted from the Beidou ship position data.

Description

technical field [0001] The invention relates to the technical field of application of fishing boat position data, in particular to a method for extracting fishing boat docking information in different places. Background technique [0002] Due to the unbalanced economic development in the last century, some fishery-developed areas (calling places) purchased ships and indicators from underdeveloped areas (ship ports) for fishery production, resulting in fishing boats with the licenses of the ship's home port, but long-term activities and docking in the calling places The phenomenon. There are two main cases of calling fishing vessels in different places: one is that the new owner of the place of call and the original owner of the port of registry reach an agreement in private to change the actual possession of the fishing boat; the other is that the new owner of the place of call purchases the vessel from the original owner of the port of registry and horsepower indicators, t...

AI Technical Summary

Problems solved by technology

At present, there is no method for extracting information on off-site docking of fishing boats based on Beidou ship position data. Therefore, it is necessary to find a calculation method for fast operational fishing boat off-site docking information, which can be used to extract fishing boats off-site stop fishing based on high-time resolution Beidou ship position data. management level

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