The Application of Expert System to GPS/DR Ground Navigation System

• Main Authors: Lai Chien-Chang, 賴建彰
• Other Authors: Ho Ching-Shun
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/62082569797250252781

碩士 === 國立成功大學 === 航空太空工程學系 === 83 === The development of ground navigation system is getting popular in this decade since the ground traffic is becoming complex. The positioning technique plays a major role in ground navigation system. So, the integration of different positioning methods, such as Global Positioning System (GPS), Dead Reckoning (DR), etc., turns out to be of great importance. A core processor in managing, monitoring, and controlling these positioning methods may require the involvement of human knowledge. Expert System is one of the new techniques that implements the human experiences. This research focuses on the application of Expert System to the ground navigation. The developed system is applied to a ground system with GPS and DR equipped in a car. The basic strategy is the DR-aided DGPS (Differential GPS) navigation. The result clearly shows that Expert System is capable of detecting error measurements from sensors, monitoring the status of subsystems, switching between subsystems to be main navigation output, adjusting the scaling factors in DR subsystem, and improving the navigation accuracy.