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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/23757

    標題: 以GPS技術量測安平港潮位之探討
    For Monitoring Oceanic Tide of An-ping Port by Using GPS Techniques
    作者: 徐博賢
    貢獻者: 應用空間資訊系
    關鍵字: GPS反射訊號
    Reflected GPS Signal
    GPS Buoy
    Multipath Effect
    日期: 2010
    上傳時間: 2011-05-17 11:47:53 (UTC+8)
    摘要: 國家級高程基準的維護,有賴於潮位站提供的精準、正確的潮位資料,目前臺灣海水面資料皆來自潮位站潮位儀測量之成果,但是否可利用GPS定位技術,亦能達到此目的,為本研究之目的。
    To maintain the national height datum is based on the monitoring of tidal gauge that provides an accurate and precise tidal record. Nowadays in Taiwan area the main data set of height datum is almost gathered from tidal gauge record. That it is possible to collect data using GPS techniques is the purpose of this research.
    To establish GPS buoy above the surface near Tide Gauge for continuously monitoring sea level change and dealing with the dynamic relative positioning of the GPS tracking station integrated with the Tide Gauge, the instantaneous position of GPS buoy can be solved. Then based on ellipsoid height of each point and time series, the curve of height distribution is drawn. The curve can represent the instantaneous position of the sea surface. On the other hand, the application of a highly integrated GPS receiver that employs reflected GPS signals to measure the sea level was performed at Ann Pin Harbor. Both RHCP and LHCP antennas are employed to simultaneously obtain direct and reflected signals. The objective of this study is to use the carrier phase of L1 and L2 band reflected signals, and direct signals to determine the sea level at coastal area, as well as to distinguish wave length and wave cycle time. The difference among the result from RGPS, tide gauge, and staff meter at Ann Pin Harbor are approximately 1.0 ~ 3.0 cm with 6 hrs of RGPS observations. It is proved that the results from RGPS measurement have the same accuracy as the tide gauge.
    關聯: 嘉南學報(科技類) 36期:p.180-187
    Appears in Collections:[嘉南學報] 36 期 (2010)
    [應用空間資訊系(所)] 期刊論文

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