| Summary: | 碩士 === 國立成功大學 === 航空太空工程學系 === 88 === During the past few decades, the vast-growing technology development in flight automation, intelligence navigation and control has made the unmanned aerial vehicles (UAV) playing important roles in military and civil purposes. Besides the military usage, the traffic monitoring, weather sounding, geological surveying and coastal surveillance are among the typical useful civilian applications of UAV.
In this thesis, an on-board computer system is realized by using a PC104 standard embedded computer and a real-time operating system (RTOS). The system developed here can provide standard interfaces for measuring sensors and actuators, such as air data sensors, environment sensors, on- board GPS receiver, inertial measuring unit (IMU), etc. The system is especially equipped with a Radio Data System (RDS) in connection with the GPS receiver to obtain a more accurate 3D positioning operation using the differential technique. The acquired data can be stored in a solid-state hard disk or directly downlink to the ground station via a wireless modem.
This developed real-time on-board computer (OBC) system can utilize all the on-line resources to design the flight control law which can be added into the system without difficulty due to the modular program design. The present OBC system can also accept the navigation points through uploading or modification when necessary. In addition, the on-board system also has provided the access of autopilot capability. The ground operator can easily control the UAV through a remote control or by pre-determined programs through the OBC system.
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