Font Size: a A A

Studies On The Key Technologies Of Electronic Chart Display And Modification

Posted on:2010-09-03Degree:MasterType:Thesis
Country:ChinaCandidate:K ZouFull Text:PDF
GTID:2178360275953564Subject:Information and Communication Engineering
Abstract/Summary:PDF Full Text Request
Electronic Chart Display and Information System(ECDIS) is a new technology arising in recent years,marking a significant progress in navigation technology.As the substitution of simple paper chart,ECDIS can not only dynamically display the chart, but also add many processed sensor information to the displaying.Electronic chart display and modification is related to many technologies,such as the designing of SENC(System Electronic Navigation Chart) document,Mercator mapping transform, chart display and clipping,data retrieval technology,etc.This thesis mainly discusses the key technologies related to the electronic chart display and modification.In this thesis,the development status and the main functions of ECDIS are introduced first.Then the necessity of data resolving is discussed and new data format according to S-57 standard is designed in order to use the data correctly in the electronic chart display and clipping.The necessity of SENC and the advantages and disadvantages of S-57 data format are also analyzed.On this basis,a new SENC is designed,which is convenient for data quick-searching.Since graphics clipping and region filling are needed in the chart display,the graphics clipping algorithm and region filling algorithm are designed according to the requirement of the chart display.Data retrieval technology is discussed in this thesis too.Different retrieval algorithms for point,line and area elements are designed based on the study of the Notices to Mariners. These retrieval algorithms are used to retrieve the data records to be modified and programmed by VC++ to verify the feasibility.
Keywords/Search Tags:Electronic Chart, Chart Modification, S-57, Electronic Navigation Chart
PDF Full Text Request
Related items