REAL-TIME VISUALIZATION MODEL AND TECHNIQUE OF NAVIGABLE AREA BASED ON DIGITAL NAUTICAL CHART
Y. Chen, R.C. Peng, G.H. Liu, W.J. Gao
Department of Hydrography and Cartography,
Since the late 90s of last century, GIS has being applied to more and more fields. With the development of the technique, more and more people pay attention to the factor of time, i.e. the new temporal-GIS system should be able to analyze spatio-temporal factors in the real world. This paper presents a research project suggesting the use of spatio-temporal techniques as navigation aid onboard ships. Firstly, constructing the model of real-time soundings, dynamic depth contours drawing and area constructing and so on. Secondly, analyze the parameter of the ship. At last, present the navigable area based on a digital nautical chart with regards to navigational information (such as the tide, the real-time soundings, the ocean current and so on) and the parameter of the ship. The main objective is to meet the special needs of navy, such as emergency operation and salvage and to lessen the cognitive load of the bridge personal.