本研究內容包含對於GPS衛星訊號接收儀與RHCP、LHCP雙頻接收天線之配置與設計；利用RHCP與LHCP雙頻天線接收直接與反射訊號，同時建置可對單一或多顆衛星訊號經海面或陸面反射後之訊號處理軟體，藉由自行撰寫的軟體可以針對地表反射面或水面的高度變化進行偵測，並考量RHCP、LHCP雙頻接收天線特性加以改良與訊號合併研究，提供正、反訊號格式、訊號偵測的誤差量級分析；新系統將Matlab軟體介面與接收儀整合直接分析；透過改善偵測與追縱正射、反射訊號能量分佈分析，以提昇小區域之天然災害發生前後地表反射面或水面變化之測量精度。

This paper involved the manufacture of special designed GPS receiver as well as the newly developed locating algorithms to automatically remote the interfering source. New system are also used to detect the elevation of water body and the land through out the reflected GPS signals and the decaying amplitude of GPS signals alone the path are also gathered by the special make receiver to reveal the concentration of TEC along the path and treatment the fluctuation of troposphere delay between refraction of water body、land and low altitude layer. Both of the hardware establishment and software development plays equipment roles in the project, it is necessary to set up guide lines for either side to follow before the construction phase and this is the mission of this main project. Four newly created sub-projects will joint together within the infrastructure of main project to share the same hardware specification and also the same data I/O interface, the time table for key component will be controlled by the main project as project built–Mat file structure database in the hardware.

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