34 results about "Vessel traffic service" patented technology

The invention relates to an active ship impact prevention monitoring system for a bridge and a method thereof. The system comprises a video monitoring device, a laser height measuring device, an alarm device, a main control computer and a centralized control center. The video monitoring device is used for finishing yawing monitoring on ships in navigation. The laser height measuring device is used for finishing height monitoring on the ships in navigation. The main control computer is used for finishing storage and processing of operation states of the ships in navigation. The centralized control center monitors whether to transmit early-warning information or other information to the ship, thereby realizing remote monitoring to ship navigation. According to the system and the method, real-time data of the ship are combined with a software algorithm, thereby realizing higher early-warning sensitivity, and compensating function limitation and efficiency limitation based on a traditional ship traffic management system and a passive ship impact prevention facility. The system and the method according to the invention perform functions of realizing full monitoring automation, reducing workload of a person and ensuring high accident early-warning reliability. The system and the method further have advantages of higher practicability, longer detecting distance and longer emergency reaction time.

The invention relates to an information navigation mark navigation guarantee system based on a Beidou satellite, which comprises a shore-based support sub-system and a marine guarantee platform terminal, wherein the marine guarantee platform terminal communicates with vessel conduction equipment in a very high frequency wireless way; the information navigation mark navigation guarantee system is mainly characterized in that: the marine guarantee platform terminal remotely communicates with the shore-based support sub-system through the Beidou satellite. The information navigation mark navigation guarantee system is reasonable in design; the shore-based support sub-system and the marine guarantee platform terminal remotely communicate with each other through the Beidou satellite, thereby solving the problem in monitoring dead zone of vessel dynamic information of areas other than a water area of a prior Vessel Traffic Service (VTS), and providing better navigation guarantee for vessels in sea areas all over China.

The invention provides a monitoring information network system established based on vessel traffic service monitoring radar. The vessel traffic service and management effects are better developed. The monitoring-radar-construction monitoring information network system comprises a very-high-frequency wireless communication device module, local monitoring radar, a remote monitoring radar, an automatic vessel identification system module, a side-direction positioning device module, a photoelectric device module, a high-digitization-sampling-rate signal collecting module, a detecting and tracking data processing module, an information transmission module, an integrated data processing system module, a real-time recording, storing and playback module, a vessel information management module, a traffic displaying operation control module, a communication network module and a device data communication module. By means of the monitoring-radar-construction monitoring information network system based on the vessel traffic service, the compatibility, the quality, the reliability, the information interconnection and intercommunity of a device are greatly improved by adopting the digital and intelligent technology, construction and transformation of a vessel traffic service center network suitable for interconnection and intercommunity and information sharing of all monitoring and managing radar stations are achieved, and the vessel traffic service and management effect are better developed.

The invention discloses a VTS system radar return video display method based on a geographic coordinate system. The VTS system radar return video display method comprises the following steps: S1, the program of a VTS system is divided into two threads, wherein the thread I is responsible for receiving and caching a radar return message; S2, the thread II responds to electronic map indication range variation to generate a new to-be-overlapped radar return video map layer; S3, the generated radar return video map layer is overlapped on the current electronic map. With adoption of the VTS system radar return video display method, the radar return video display problem of a ship traffic management system, particularly to a system with the data format of the electronic map measured by the geographic coordinate system, is solved, and under the condition that the system overhead is acceptable, the VTS system radar return video display method ensures the position consistency of a radar return video and a ship target on the electronic map, is particularly suitable for the ship traffic management system, and is generally used for a single port, an offshore area and an inland river with smaller geographic display ranges, as well as a system allowing certain deformation of map projection.

The invention discloses an AIS based river and sea bridge active anti-collision system. The system comprises a navigation information processing unit, a data processing unit and a voice signal sending unit which can form data exchange with ships and a ship traffic management system, wherein the data processing unit can finish data exchange with the navigation information processing unit and the voice signal sending unit. According to the technical scheme, the navigation information processing unit is used for sending navigation main pier information to the ships, receiving ship information and transmitting the ship information to the data processing unit; the data processing unit operates according to the received ship information, analyzes the states of the ships and judges whether a collision risk exists in the ships or not, if the collision risk exists, the data processing unit timely sends a voice alarm to the voice signal sending unit, and if the collision risk does not exist, the data processing unit timely sends a voice prompt to the voice signal sending unit.

The invention discloses a hardware acceleration based vectorized VTS (vessel traffic service) system radar video drawing method. The method includes: firstly, establishing a vectorized rectangular coordinate system for each radar needing to be displayed on a VTS traffic management system, dividing each rectangular coordinate system into a plurality of display polygons with enough accuracy, and allowing each sampling point of the radars to belong to one specific display polygon, wherein size and shape of each display polygon depend on scaling of the system and sampling precision of the radars; secondly, determining color depth of each vector graph according to amplitude of original videos by mapping the original videos of the radars to the divided vector graphs; thirdly, according to vertex position, length and width and scaling of a window, determining number of the vector graphs needing to be displayed; finally, invoking a graphic display card to display the radar videos with hardware efficiency. The method has the advantages of high display efficiency, radar video continuity and smoothness and no hollowness under the condition that video precision is guaranteed.

The invention discloses a dual-mode satellite fusion positioning method suitable for a ship traffic management system. Dual-mode fusion of Beidou and GPS is performed to realize accurate, real-time and reliable positioning of a ship. The method mainly comprises the following steps: firstly, a satellite dual-frequency pseudo-range error correction model is established; then, spatial position coordinates of a Beidou satellite and a GPS satellite are respectively calculated according to the ephemeris data, and dual-system time-space conversion and unification are carried out; then, Beidou and GPSdual-mode pseudo-range positioning calculation is carried out, and the ship position is preliminarily solved; the elevation angle of each satellite relative to the ship is calculated; then a multi-weight model is established according to factors such as a system category, a signal-to-noise ratio and an elevation angle of the satellite; and finally, positioning calculation is carried out on the ship again based on the multi-weight model, and the spatial position coordinates of the ship at the moment t of the current observation epoch are finally determined. The method is higher in positioningprecision, lower in algorithm complexity and higher in system safety.

The invention provides a designing method of a data sharing interface for a vessel traffic management system (VTS), the VTS plays an important role in promoting vessel traffic safety, improving navigation order, improving traffic efficiency and protecting water environment, and works based on vessel static/dynamic information and navigation environment information. A method for realizing VTS data sharing and eliminating information isolated island comprises data exchange function in two directions: 1, TO VTS, that is, sharing the vessel static information and the navigation environment information of a third party system to the VTS to improve the work efficiency and the service quality of the VTS competent department and promote the informationalization level of the VTS on-duty work; 2, FROM VTS, that is, sharing the vessel dynamic information to the third party system to browse, and expanding the use range of the VTS information to completely make the VTS system to work. The VTS data sharing involves complex development units or systems and rich content, and the influence risk to the VTS data sharing interface caused by different types of development tools and databases selected by the third party system or further upgrade can be avoided by using the designing method.

The invention discloses a vessel traffic service (VTS) attendant competence intelligent assessment system, comprising an intelligent assessment coach command control terminal, an intelligent assessment client side, a VHF (very high frequency) voice gatherer and an intelligent assessment server side which are in connection through data signal lines. The VTS attendant competence intelligent assessment system can realize the intelligent assessment on the VTS operation ability and navigation information service standardized phrases of students, and provide a more objective competence training and assessment platform for VTS attendants to improve self VTS operation skills and to expertly use SMCP.

The invention discloses an off-site vessel violation evidence collection system which comprises a radar antenna and receiver unit, a radar video processing unit, a VTS (vessel traffic service) display unit, an AIS (automatic identification system) base station, an AIS base station data processing unit, an AIS display unit, a data acquisition unit, and a VTS and AIS data integrated display unit. The radar antenna and receiver unit, the VTS display unit and the data acquisition unit are all connected with the radar video processing unit. The AIS base station, the AIS display unit and the data acquisition unit are all connected with the AIS base station data processing unit. The data acquisition unit is connected with the VTS and AIS data integrated display unit. The off-site vessel violation evidence collection system enables punishment for violating vessels to be electronic, deterrence of maritime control is further increased, and vessels are safer.

The invention discloses a VTS (vessel traffic service) system based on RPR (resilient packet ring) technology. The VTS system comprises a radar, a closed-circuit television monitoring system, a VHF (very high frequency) communication station, an automatic vessel identification system base station, a radio direction finder, a sonar, a processing computer, a display control computer and a server. The radar, the closed-circuit television monitoring system, the VHF communication station, the automatic vessel identification system base station, the radio direction finder, the sonar, the processing computer, the display control computer and the server are connected to the VTS system through RPR nodes, so that the VTS system is integrated with IP intelligence, Ethernet economy, and high bandwidth efficiency and reliability of an optical fiber ring network.

The invention discloses an implementation method for multi-radar video multi-window on-screen display in a VTS (vessel traffic service) system. The implementation method comprises following steps: (1) obtaining selected radar video data sources and creating calculating threads corresponding to the radar video data sources; simultaneously obtaining windows of radar videos required to be displayed, creating display threads corresponding to the display windows and intelligently predicting the calculating threads; (2) establishing thread priority; (3) determining calculating quantities of the various threads, reasonably distributing the calculating quantities to various CPU (central processing unit) cores, synchronizing the various threads and displaying final results onto a screen; and (4) predicting a following operation direction of an operator according to current operation of the operator, obtaining a calculating result in advance, and directly applying the calculating result before the operator finishes the current operation. The method can shorten calculating time required by radar video signal display, and increases processing quantity of radar video data within unit time.

There is provided a three-dimensional radar system by using the combination of commercialized usual radars for vessels at relatively low price so as to enable to strengthen the surveillance capability about aircrafts flying at low altitude and strengthen the surveillance capability on the sea and in the air to protect important facilities of a port with more developed than the conventional surveillance system of monitoring only ships or vessels in a port while overcoming the operational limitation of VTS (Vessel Traffic Service).

The invention provides a topological structure-based radar photoelectric sensor target association fusion method, which realizes tracking, monitoring and identification of a heterogeneous sensor fusion system on a target, and can be applied to monitoring and management of ships in important ports and inland waterway by a ship traffic management system. The method can be applied to a ship traffic management system. The method is different from traditional radar target discovery. According to the ship traffic management system, an image detection target and a VTS system detection target are automatically associated and fused by adopting a topological structure-based multi-source heterogeneous sensor information fusion technology in a manual working mode of photoelectric cooperation monitoring and verification, so that automatic monitoring and identification of a ship target are realized, and the intelligent level of the ship traffic management system is greatly improved.

The invention relates to a radar antenna for a ship traffic management system. The radar antenna comprises a box body, a skeleton component, a polarization grid, a waveguide and a wing plate component, wherein the skeleton component, the polarization grid, the waveguide and the wing plate component are arranged in the box body. The polarization grid and the wing plate component are fixed on the box body through the skeleton component. The waveguide, the wing plate component and a feeding network are all arranged on a polarization grid. The waveguide is connected with the feeding network. The box body comprises a top plate and a bottom plate. A windshield and a radome are arranged on both ends in the width direction of the top plate and the bottom plate respectively. Side plates are arranged on both ends in the length direction of the top plate and the bottom plate. The skeleton component is fixedly connected with the top plate and the bottom plate. The polarization grid and the waveguide are arranged near the windshield. The wing plate component is arranged near the radome. The radar antenna provided by the invention has the advantages of light weight and simple structure, which ensures the scanning speed of the radar antenna to an observation area, and improves the working performance of the radar antenna.

The invention discloses a ship traffic management system disaster recovery method supporting dual-homing protection. The method comprises the following steps: step 1, setting a VTS system front-end sensor; step 2, acquiring data of a front-end sensor; 3, front-end sensor data are processed and stored in the double VTS centers in real time; step 4, structural data storage and bidirectional synchronization between the double VTS centers are carried out; and step 5, the user terminal belongs to the double VTS centers. According to the method, different protection mechanisms are adopted for front-end sensor data and structured data, the front-end sensor data are transmitted back to double VTS centers in real time to be processed and stored, the structured data generated by each VTS center is synchronized to the other VTS center in real time after being stored, and then a user terminal is dual-attributed to the VTS center. Meanwhile, the double VTS centers serve as full-function full-jurisdiction service center redundancy for each other, so that the service of the VTS system is ensured not to be interrupted, and the integrity and continuous availability of data are ensured under the disaster condition, and the system has the characteristics of low cost, high real-time performance, high reliability, wide applicability and the like.