3D Display Of Shipping State Base On ECDIS

Electronic chart is a digital map for navigation need, which can describe the seaand its adjacent land in the form of digital. With the development of modern shippingindustry, the paper chart has been replaced by the electronic chart, because it takes theadvantages that its convenient storage, larger capacity, and strong real-time.Electronic chart display and information system (ECDIS) is a navigationinformation system that make computer as its core and can connect position, sounding,radar and other equipment. Based on ENC, it is a specialized tool which can give acomprehensive reflection of ship driving state and provide information services,measurement and navigation records.In this issue, based on the in-depth study of electronic chart and under theintegrated development environment of QT, we use Ec2007Kernel SDK chartdevelopment platform and ENC vector chart to complete this system of ECDIS, inwhich the display of electronic chart and various kinds of navigation functions arecome true.However, because the real-time display of the ship and dynamic target fortraditional ECDIS is only limited to the large scale on the surface, for the vessels thathave the closing work demand, this low-precision display is difficult to guarantee thesafe navigation of the ship. Based on ECDIS in this paper, for the problem about theclose-in operation safety and efficient display, a three-dimensional display subsystemis designed and implemented for ship motion visualization. This Subsystem is asupplement of the existing ECDIS. With the information, such as position andmovement parameters of ships and close-in target obtained from ECDIS, the shipmotion state parameters are calculated and then a three-dimensional display of motionsituation is achieved by OpenGL technology.Application results show that the three-dimensional display subsystem proposedbased on ECDIS can provide an efficient three-dimensional display of close-in shipsmotion state, which will in turn facilitate the decision making of ship navigation andoperation in practice.