• Proceedings of the KSR Conference
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• 2010.06a
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• pp.1525-1532
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• 2010

Modern surveying techniques have been progressed to get the absolute position of a single coordinate system at any point on the earth with the advent of the Global Navigation Satellite System and One-stop digital equipment. In addition, as the speed of the railway has been increasingly faster, in determining the location of major facilities including the center of tracks, it is required to the sophisticated precision. The surveying of railway construction has applied the technical supports and procedures in accordance with the current requirements. In this study, the applicable guidelines of surveying on practical issues and alternatives would be examined, analyzed, and presented by using the empirical data of pilot areas in the process of design, construction, and the maintenance of railway.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.20 no.4
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• pp.415-421
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• 2002

A recently lot of facilities have been constructed from rapidly development of science and economic growth. Among them, bridges are tending to be large because of geometrical problems of the road. And then the method of satellite surveying is being practical use variously out of present surveying methods. Therefore in this study it takes a measurement of bridge displacement using the RTK GPS Mode instead of the using mechanical measurement system. The observation value was verified by using Total Station to inspect observation value of RTK GPS. And then, by using the Delphi of object intending language, developed bridge warning system and applied it. The result of this study was found verification error of 0.2~8.3mm, therefore the measurement of bridge displacement of grand bridge can be applied by using An GPS.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.31 no.3
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• pp.199-207
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• 2013

In hydrographic survey, data surveyed with multibeam system includes various errors due to multiple factors. These are corrected by a calibration called patch test, and if existing method is used, the test needs to be conducted for about 8 times for precise system calibration. For more prompt and precise multibeam system calibration, the exact offset of a ship was determined using terrestrial laser scanning and TS surveying, which was used as the initial input for the patch test. In the result, the error of closure was 0.001 m or less for TS surveying and backsight error was 0.005 m or less for scanning. All the surveying data based on the same local coordinate was converted into vessel reference coordinate during which R-square for all rotation angles was 0.99 or higher and standard deviation was 0.008 m or less. Finally, in a patch test using calculated offset of sensors and motion sensor offset, the offset of MBES transducer satisfied manual on hydrography only with 1-time calibration. With these results, it is thought that terrestrial laser scanning and TS surveying can fully be utilized for multibeam system calibration.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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• 2003.10a
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• pp.69-74
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• 2003

This study is aimed to develop a system to position and manage object flow in real time. Logistics management system which position objects and vans using GPS is required to load, unload and keep freight effectively and in real time at sea or airport. In this study, a management system which is consisted of five sub-systems is developed; GPS position analysis system, GPS interface system, mapping system, network system and database management system.

• Journal of Cadastre & Land InformatiX
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• v.45 no.1
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• pp.151-167
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• 2015

At present cadastral surveying is being driven fort combination of digitalized cadastral map accord with real cadastral boundary between cadastral resurvey area and World Geodetic System transformation about all country. So this study is conducted to newly establish items being needed in making digitalization of parcel boundary points based on the World Geodetic System in registration conversion surveying. For this study firstly management of mountainous districts Act, related laws and registration conversion-related laws and regulations are reviewd. Secondly, economical, administrative validation by using data from 12-branch companies of LX is analyzed. Thirdly, surveying method and procedure were established through experimental surveying on the two cases such as digital and analog area. Finally, through investigating standard of estimate about cadastral surveying, it was calculated amendment of registration conversion surveying fee based on World Geodetic coordinate System.

• Journal of Internet Computing and Services
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• v.7 no.2
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• pp.53-69
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• 2006

Recently as the Internet services become popular, the number of practical approaches to tackle social problems by using computers is increasing rapidly. One of the typical problems is the surveying system that handles a large amount of various data and thus requires much effort in time and manpower. As the necessity of the computerized surveying system is increased, there have been many tries to develop the surveying system based on the web or standalone software for public opinion collection, market research, and so on. In this paper, we design and implement a respondent based real-time surveying system using XML and QCL in order to efficiently process a various style of questionaries.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.11
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• pp.6639-6645
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• 2014

This study was conducted to deduct the facing problems by analyzing the reflected computing environment of a cadastral surveying fee calculation process for all cadastral surveying items and suggest an improvement plan for the process, corresponding to the cadastral surveying environment. An analysis of the problems showed that the current cadastral surveying fee calculation process was complicated compared to other relevant fee calculation processes. Although work process has been improved due to the changes to current cadastral surveying technology and the digital cadastral management system, it has not been reflected. This article suggests simplifying the current universal nine-step process into a four-step process. In addition, the improvement plan for the improved work process with computer files to be applied before and after field surveys is suggested. The cadastral mapping process is divided into four steps to make it suitable for a computing environment and the corresponding process improvement plan is suggested.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.26 no.5
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• pp.465-473
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• 2008

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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• 2004.04a
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• pp.71-76
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• 2004

Development of industry is increased Traffic Volume and have brought increase of road. As a result, Maintenance-management expense of the whole road is rapidly increase. Operation of PMS (Pavement Management System) need that it is efficiently for maintenance-management the whole road network Into budget limited. PMS is effective management through Investigation of roughness, crack, plastic deformation, etc of road. Advanced nation recognizes necessity of maintenance-management of road, progress to investigation and research. Our country is lacking that systematic pms's application and research. Therefore, this research estimated using of surveying method of DGPS that roughness of road for investigation-step of PMS. At the future, this paper may contribute in research of automatic surveying system for road surface.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.15 no.2
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• pp.195-206
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• 1997

By this time, in order to measure baseline in a few minutes, we must have used expensive dual frequency receiver. Recently, low-priced single frequency receiver have taken place of dual frequency receiver at short base-line by advancement in software development, improvements in geodetic survey receiver system. In this study, according to the observation time and measurement interval, we analyzed differences of each components of baseline by field experiment and we propose the criterion for the minor control point surveying by single frequency GPS receiver.