港口區域及感潮河段的流場變化，一直是科學研究者急欲去了解探討的，本研究採用新式的都卜勒微波雷達系統，改變以往使用單雷達遙測方式，採用雙雷達遙測系統進行表面流場的觀測，獲得良好的即時表面流場資訊，並可了解整體流場的變化。
本研究分別在安平港港口航道區域和二仁溪出海口進行觀測，安平港所獲得的成果良好，準確掌握表面流場的變化，而二仁溪出海口的資料，則因觀測現場條件的限制，使得資料無法進行分析。最後對於本研究觀測結果做詳細討論，並對未來相關研究提出建議。

The flow field variation in harbor areas or tidal river sections is a subject that has been always investigated by researchers. Flows in these regions are not uni-directional and the single radar remote sensing system, Rivdar, used by our research group, could not take accurate measurements, particularly at the detection of flow directions. The present study had adopted a pair of Rivdar to conduct the measurements, and obtained fair flow field information. This thesis reports the method of setting up of the new system and main observation results.
The observations were undertaken at the waterway of Harbor Anping and the outlet of River Erhjen Estuary, respectively. The results gathered at Harbor Anping were fine enough for us to know the variation of surface flow field, but those gathered at River Erhjen could not be analyzed because of the weak reflection of the return signal from the water surface, during the observation. Based on the experiences of the present study, we propose that more efficient interpolation scheme and the setting up procedure for field pair Rivdar system should be standardized in order to obtain good flow observation qualities.

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