Research On Ocean Current Data Collection And Management Platform Based On WebGIS And Optimal Navigation Path

Monitoring the marine environment has a vital role on environment for the survival of humans and marine economic development. With more in-depth development and research on Oceanography in recent years, humans pay more attention to marine environmental monitoring and research work . The research contents of this paper are data collection and management system on ocean current information research projects in coastal zone of the Yellow Sea. This paper designs and develops an open platform for ocean current data collection and management based on WebGIS and optimal navigation path.The platform introduced Google Maps to realize a dynamic visual display of collected data on the maps. Users can capture real-time monitoring information and device status. This paper shows the design in map module to achieve the function of sea navigation. By a Improved minimum weight matching algorithm, the optimal TSP Hamiltonian loop is calculated in the paper. According to the instructions of the optimal path, people start from a point, recover all the equipment then return. It saves the cost.The data communication protocol is formulated to realized the sharing of the platform, so that the users who follow the protocol can realize the data communication. The projects which are in accord with the communication protocol can use the system to collect and manage the marine data. Users'permissions are based on different roles in the use of the platform, so the sharing of ocean information can be realized.Platform is divided into two parts:ocean current information collection system and ocean current information management system. ocean current information collection system collect data through the data communication of PC and intelligent collection equipment; Ocean current information management system uses B/S model as the framework for system development, to realize the display and management of ocean current information. It's open and extensible .According to users'requirements and the objectives of system design objectives, the platform involves two systems: information collection and information management. Information collection system includes the protocol formulation module, information listening and receiving module, the command transmission module and information filtering processing module; Information management system includes user login and registration module, data collection query module, the device management module, the map display module, the alarm processing module, data management module, the project management module, user management module and so on.The platform uses Java and JSP as the development language, and realizes data interaction through the JDBC middleware and SQL Server 2005 database. Ocean current data management subsystem is based on J2EE architecture of MVC model. In the foreground presentation layer, the free Google Maps are used in the platform as a technology support of WebGIS. Operating Ajax through the jQuery can realize the maps and the interaction page of data without refreshing. It brings positive experience to users.