本論文探討GPS 接收器運用於太空載具上的發展與模擬。首先，我們主要設計針對太空級GPS 接收器搭載於軌道高度600公里、傾角97度之低軌道微衛星上，並利用Matlab 軟體模擬太空級GPS接收器在此高動態環境下訊號接收的變化及定位性能分析，並提出相對的解決方案且加以利用，以改善接收器相對於高動態環境下所遭遇到的問題。
　　實際系統架構方面，我們選擇利用適當的硬體系統架構
（GPS1000）並利用C語言發展相對於太空級GPS 接收器使用之軟體應用程式（OpenSource GPS Software）。在實際測試上則是利用虛擬GPS訊號產生器（GS100W）做為訊號測試來源，並以較精準之商用型GPS 接收器（NovAtel DL4）做為對照比較，藉此以相關實驗證明及分析本論文所發展之太空級GPS 接收器可應用於高動態之太空環境。

　　The thesis is concerned with the development and simulation of space GPS receiver. To begin with, a simulation is developed to investigate the change of signal characteristics such as strength, visibility, and Doppler with respect to GPS satellites for a low-earth orbiting (LEO) satellite. Some consequences of the high dynamical environment are observed and appropriate countermeasures are presented.
　　Furthermore, a GPS receiver system is setup to experimentally receive GPS signal that is subject to high dynamic stress. The GPS receiver system relies on the development of open source software. Finally, the performance of the spaceborne GPS receiver under a simulated high dynamical environment is demonstrated.

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