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Applied Research of Hydrographic Data Management Based on Electronic Chart

Author: JiaSuMei
Tutor: ChenXianQiao
School: Wuhan University of Technology
Course: Computer Science and Technology
Keywords: GPS GPRS Measurement Data Management Electronic Chart S-57
CLC: U675.81
Type: Master's thesis
Year: 2011
Downloads: 67
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Abstract

Waterway waterway construction phase measurement is a very critical aspect, which for rational organization waterway excavation, construction quality control, engineering process control, waterway siltation analysis and other aspects play an important role in guiding decision-making, while measuring Work for the safe navigation of waterways and other technologies to provide a reliable guarantee for the amount of calculations provided valuable information. Seaway traditional method of measurement is the use of conventional instruments measured with resection, the principle is to use the shore of the two control points through two theodolites plane intersection point of the maritime location, and then measured through tracking ship with seawater instantly plumb depth, this method is not only a waste of time and manpower, and poor measurement accuracy, the measurement results are difficult to achieve construction requirements. With the current needs of construction projects and technical level, the global satellite positioning system (referred to as GPS) and echo sounder has penetrated into all areas of construction, making the marine surveying easier, more flexible, and measurement accuracy high. Collected data transmitted in real time via GPRS wireless network to a shore-based measurement measuring center to update the central database. So as an important information channel management, channel research, building the foundation, and the waterways of the important results of all measurements, Hydrographic Center how to efficiently manage the data and make measurements play an effective value of the measured data, the relevant units of departments to quickly and easily use measurement data, thereby further enhancing the level of waterway construction and services has become the focus of this research, in addition to this project for electronic charts and Hydrographic combination of real-time display on an electronic chart tracking ship conducive to measure real-time understanding tracking ship center dynamic, which is the channel to be more business to provide services. The main subject of the work include: Hydrographic data acquisition, measurement and data transmission of measurement data to do a series of effective management analysis. (1) with a depth echo sounder data collected with GPS locator ship's position data acquisition and analysis of measurement data possible interference, and anti-jamming technology analysis. (2) using GPRS wireless data transmission network to complete the measurement data transmission, gives the user terminal to communicate with the data center design and implementation. (3) to study how the measurement data for effective management, how to design a measurement data structure, how to design a database to ensure the security of the measurement data storage, security check, security management and a series of security operations; also analyzed the management system architecture and the measured data overall dynamic processes. (4) describes the origins and ECDIS ECDIS experienced several stages, such as paper charts from initial development to the present can edit, modify, query and other operations of the electronic chart; also introduced The S-57 ENC data transmission standards, data structures and data encapsulation standards and chart display, and gives the tracking ship in real time on electronic chart display a partial implementation of codes.

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