Combination of FRID and e-GPS Applied to Cadastral Surveying

• Main Authors: Wen-Shih Chen, 陳文石
• Other Authors: Tseng Ching-Liang
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/05612019125446864700

碩士 === 國立成功大學 === 地球科學系專班 === 95 === There is a high percentage of loss of land surveying piles/marks in Taiwan each year as the result of road development projects in urban planning, repaving of road surfaces, the use of private land for construction – or sabotage, and hence there exists a great need to reinstall these piles that adds more workload and a higher degree of difficulty for cadastral surveying crews. As such, this study shall explore the means to combine the most advanced e-GPS surveying technology with RFID technology, as well as how to implement the study results into the various tasks of cadastral surveying, with the objectives to maintain the integrity of cadastral records, enhance the efficiency of cadastral surveying, strengthen the management of the surveying piles/marks, and finally lighten the workload of cadastral surveying crews in order to speed up cadastral surveying. RFID is a non-contact frequency identification system capable of reading, writing and storing information, as well as radio communication; this technology is used widely nowadays in logistical, warehouse management. If the built-in UID feature can be combined with surveying piles/marks to provide identification and data retrieval capabilities, then they may become “intelligent” piles/marks able to identify themselves. e-GPS is a real-time, dynamic surveying method applying the ultra precise positioning capability of GPS and communication technologies, having the abilities of point guidance and resetting. It is the finding of the study testing different RFID frequencies under different environments that two lower frequencies, 125KHz and 13.56MHz possess the characteristics of mature technology, being unaffected by water content, better surface penetrability and low equipment cost; they are also able to detect electronic label signals under puddles and the coverage of soil. Although the frequency 13.56MHz is unable to detect signals under the influence of metals, yet with proper insulation packaging that is able to reduce the influence from metal surfaces, this frequency is still suitable candidate for the production of “intelligent” surveying piles/marks. According to the results from the analysis, it is suggested that the 125KHz-based RFID system may be given the priority in the implementation of surveying application systems. If RFID and e-GPS can be combined and applied in cadastral surveying tasks, then their capabilities of guidance, identification, reset and point data processing may enhance the efficiency of cadastral survey, so that the management may be more convenient, and current operating procedures of cadastral surveying may be unaffected.