The Design Of The ECDIS Based On COM Technology

The thesis stems from the subject of National Ocean Bureau's "Automatic Query System of Oceanic Information based on ENC". The system embodies an application of ECDIS in the field of oceanic information. The system establishes automatic navigational charts, so as to fulfill the services of digitalized administration of oceanic information .First, in according to the requirements of the software engineering, this design scheme puts forwards the design idea of COM-based ECDIS based on the overall analysis of the ECDIS step by step and the limitation of the software developing circumstances at time. Then the overall design is introduced based on the advanced object-oriented.This work is designed in specific, coded and debugged to achieve the required functions of users. Now the system has passed preliminary test and won high appraisal.It is a technically difficult job to integrate functions of sharply different operations and features into one system for concentrated regulation and management. To resolve these problems, this thesis comes up with the creative idea of applying COM technique to ECDIS and management of button. As a result, the development of the whole system goes smoothly and system functions are effectively achieved.In the course of developing ECDIS, the technology of movable template is used and the programming tools are Visual C++ and Delphi to achieve the function of independent of language and transplant.Finally, based on the practical work and achievements in the course, I draw a conclusion and make a prosperous view in the future development of ECDIS. In addition, comparing all data in many kinds of properties and presenting diagram analysis, the thesis discusses the advantages of COM-based ECDIS over former ECDIS in the aspect of inheritance. At last, the thesis predicts its developing trendand wide application of the subject in the future.