Study On Visual Planning Of Ocean Scientific Survey And Its Application

Scientific and reasonable plan should be made for ocean scientific survey because it is costly. As the contents of survey plan are complex and various, traditional handwork-planning is time-consuming and laborious, and it is difficult to make an optimized plan, so efficient and scientific visualization-planning should be studied. To improve the efficiency and scientificity of survey planning, a visual planning method for ocean scientific survey is studied, and practical visual palnning software system is designed and implemented for serving ocean scientific survey and improving its technical level.Contents, methods and flows of survey planning are thoroughly analysed: the contents of survey planing include survey objective, survey missions, survey tasks and implementation scheme. Firstly, survey objective is set; secondly, survey missions are determined according to survey objective; thirdly, each survey mission is divided into several survey tasks, and corresponding stations and survey tracks are posted; lastly, implementation scheme is planned based on the above. There are two patterns of station posting: specifical posting and exploratory posting, and three patterns of survey track posting: specifical posting, coverall posting and exploratory posting.Based on above analysis, the following main work is finished: contents of ocean scientific survey voyage are standardized for automatic planning, two concepts including survey track area and area are given for standardized management of stations and survey tracks, voyage information is classified, voyage structure is put forward, standarded formats of voyage report forms are designed for automatic output; spacial voyage objects including port, area, inflexion point, station, survey track area, survey track and lane are visually abstracted by using Geographical Information System(GIS) technology, simulation and rehearsal method of survey plan is given based on GIS technology and Flash technology; by utilizing the adaptability of Delaunay Triangulated Networks(DTN) expressing the adjacent relations among points, a new algorithm syncretizing DTN and Genetic Algorithms(GA) is raized for optimized planning; functional requirements of visual planning system are analysed, and the system is designed and implemented by using Visual C ++, Microsoft Foundation Class(MFC), Microsoft Access, Mapinfo MapX and Shockwave, and gets successful applications in survey plannings of DY115-19, DY115-20 and several trial voyages.Main characteristics of our study are as follows:(1) Theories and methods for visual planning of ocean scientific survey are given;(2) Optimization algorithm syncretizing DTN and GA is creatively presented.