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3 results about "Vessel traffic service" patented technology
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A vessel traffic service (VTS) is a marine traffic monitoring system established by harbor or port authorities, similar to air traffic control for aircraft. The International Maritime Organization defines VTS as "a service implemented by a competent authority designed to improve the safety and efficiency of vessel traffic and protect the environment. The service shall have the capability to interact with the traffic and respond to traffic situations developing in the VTS area". In the United States of America (USA), VTSs are established and operated by the United States Coast Guard (USCG) Navigation Center. Some VTSs in the USA operate as partnerships between USCG and private agencies. Typical VTS systems use radar, closed-circuit television (CCTV), VHF radiotelephony and automatic identification system to keep track of vessel movements and provide navigational safety in a limited geographical area.
VHF voice ship name association method suitable for ship traffic management system
The invention discloses a VHF voice ship name association method suitable for a ship traffic management system. The method comprises the following steps: step 1, establishing a pinyin code table and an approximate voice index table; 2, preprocessing a dynamic ship name set; step 3, multi-channel voice-to-text conversion; 4, multi-size sliding window matching is carried out; and step 5, outputting an optimal matching ship name. The characteristics of a ship traffic management system are combined, the problems that VHF voice-to-text accuracy is low and ship name association is difficult are solved through a dynamic ship name set matching range reduction algorithm, a multi-model collaborative transcription and hot word optimization algorithm, a dynamic ship name set preprocessing algorithm and a multi-size sliding window matching algorithm, the intelligent level of maritime affair supervision is remarkably improved, and the ship name association efficiency is improved. The method has the characteristics of low resource consumption, high real-time performance, high accuracy and the like.
Owner:CSIC PRIDE (NANJING) ATMOSPHERIC & OCEANIC INFORMATION SYST CO LTD
A method for VHF voice association of ship name suitable for vessel traffic management system
This invention discloses a method for associating ship names with VHF voice signals in a vessel traffic management system. The method includes: Step 1, establishing a pinyin code table and an approximate sound index table; Step 2, dynamic ship name set preprocessing; Step 3, multi-channel speech-to-text conversion; Step 4, multi-size sliding window matching; and Step 5, outputting the best-matching ship name. This invention, combined with the characteristics of a vessel traffic management system, solves the problems of low accuracy and difficulty in ship name association in VHF speech-to-text conversion through dynamic ship name set narrowing of the matching range, multi-model collaborative transcription and hot word optimization, dynamic ship name set preprocessing, and multi-size sliding window matching algorithms. It significantly improves the intelligence level of maritime supervision and features low resource consumption, high real-time performance, and high accuracy.
Owner:CSIC PRIDE (NANJING) ATMOSPHERIC & OCEANIC INFORMATION SYST CO LTD
A grid representation method of geographical elements suitable for vessel traffic management systems
ActiveCN119088891BFile access structuresGeographical information databasesPerformance computingGeoweb
This invention discloses a gridded representation method for geographic elements suitable for a vessel traffic management system. By combining the characteristics of a vessel traffic management system with refined gridding of water areas, the method converts geographic elements into information based on geographic grids through high-performance computing. A dual-layer grid compression storage strategy is employed to enable the system to achieve real-time, high-speed access and processing of geographic information with low resource consumption. This dual-layer grid compression storage strategy enables real-time, high-performance querying of geographic elements by a VTS system with low resource consumption, resulting in low resource consumption, high real-time performance, and strong flexibility.
Owner:CSIC PRIDE (NANJING) ATMOSPHERIC & OCEANIC INFORMATION SYST CO LTD