Signal structure of the Chinese Area Positioning System

• 来源期刊: 中国科学G辑（英文版）
• 年，卷（期）: 2009,（3）
• 页码范围: 412-422
• 页数: 11页
• 语种: 英文
• DOI: 10.1007/s11433-009-0061-x

摘要

Proper signal structure is very important in the navigation,positioning,and time services of a satellite navigation system.In this paper,the carrier wave characteristics,ranging code functions,BOC modulation,navigation data rate,the error-correcting methods,and signal channel resource allocation are discussed in terms of the technical characteristics of the transforming satellite navigation system and the resources of communication satellites.The results show that dual-frequency of C band in the Chinese Area Positioning System (CAPS),compound ranging code,a combination of the coarse code and precise code,BOC modulation,eeparate-channel transmission of different users are compatible with the satellite navigation system at present.The experiments show that the current signal structure can meet the demand of CAPS.