TD-AltBOC:A new COMPASS B2 modulation

查看全文 作　　者：TANG [1]ZuPing;ZHOU [2]HongWei;WEI [1]JiaoLong;YAN [1]Tao;LIU [1]YuQi;RAN [1]YiHang;ZHOU [1]YanLing

机构地区：[1]Department of Electronics and Information Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;[2]Beijing Institute of Tracking and Telecommunication Technology,Beijing 100094,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》索引2011年第54卷第6期,共8页

摘　　要：AltBOC(15,10) is the baseline of COMPASS B2 signal modulation.It is a BOC-like signal having different PN codes in the lower and the upper main split lobes,which allow one signal service per lobe.The two lobes can be received and processed separately like two BPSK(10) signals,or coherently processed to achieve better performance.Interoperability among COMPASS B2,Galileo E5 and GPS L5 is also achievable using AltBOC modulation.However,Galileo's 4-code AltBOC has drawbacks such as low efficiency and great receiver complexity.This paper presents a new modulation type named TD-AltBOC (Time Division AltBOC).The signal generation scheme and receiving method are presented,and are compared with AltBOC in the areas of power spectrum,ranging accuracy,anti-multipath performance,anti-interference performance,processing flexibility and complexity.Analysis results show TD-AltBOC has similar spectrum characteristics,interoperability,flexibility and anti-interference performance with AltBOC.When the frontend bandwidth is more than 50 MHz,TD-AltBOC can achieve better ranging accuracy and anti-multipath performance.It also has such advantages as high efficiency and low receiver complexity.TD-AltBOC could be a good solution to COMPASS B2 navigation signal. 关键词：信号调制指南针 TD 抗干扰性能互操作性测距精度 BOC调制 BPSK

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TD-AltBOC:A new COMPASS B2 modulation

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