WANG Yu1,2,3, GAO Yu-ping1,2

(1. National Time Service Center, Chinese Academy of Sciences, Xi’an 710600, China;

2. Key Laboratory of Time and Frequency Primary Standards, National Time Service Center,

Chinese Academy of Sciences, Xi’an 710600, China;

3. Graduate University of Chinese Academy of Sciences, Beijing 100039, China)

Abstract: In view of the deficiency in data sharing, hardware compatibility and portability for the existing GPS data acquisition equipments, we put forward a design scheme of GPS data acquisition equipment. In this design scheme, an ARM micro-controller and a SD(secure memory digital) card are adopted in the hardware, and the UC/OS-II embedded real-time operation system and the FAT32 file system are combined with the software. The test of the prototype shows that the design of the GPS data acquisition platform meets the demands of design and it has the virtues such as small size, portability, low power consumption, data-sharing, being compatible with many different types of GPS-OEM board.

Key words: GPS; ARM micro-controller; data acquisition; file system