本論文旨在提出一用於調頻系統的服務跟隨方法，目的在能接收來自DAB調頻器輸出的音訊，並透過本論文所提之系統自動搜尋可用的空白頻道，重新以調頻訊號轉送出，並在穿越不同區域若有和電台使用相同頻道的現象時偵測出訊號變化，除本身的發射機改以其它可用的空白頻道轉送，利用無線電資訊系統讓接收音訊的車機型收音機亦能跟著轉換頻道。

This thesis is focus on a method of service following for FM broadcasting. We propose a method that can automatically search an available channel and re-broadcast the audio signal from a DAB tuner. Furthermore , the method detects the unusual change of signal while there is any station uses the same channel. If system detects abnormal change of received signal , the system will broadcast on another available channel and force the in-car radio switch to the same channel via Radio Data System (RDS).

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