摘要
MBOC(6,1,1/11)是GPS和Galileo的互操作信号,这种新型导航信号的一个显著特点是含有导频通道(pilot chnanel)和数据通道(data channel)。其中导频通道不调制导航信息可以增加相干积分时间,用于伪距测量;数据通道调制导航信息,可以用于伪距测量和导航信息解算。传统的跟踪技术是对单一的信号成份(导频/数据)进行跟踪,但这会有3dB信号功率的浪费,造成跟踪精度的降低。文章采用线性联合跟踪方式实现MBOC信号的跟踪,并从工程应用的角度,提出了采用BOC(1,1)作为本地参考信号的改进方法,最后通过仿真验证了其性能。
MBOC（6,1,1/11） is the interoperable signal of GPS and Galileo system. This new navigation signal con-tains both data channel and pilot channel. The former used for pseudo range measurement carries no navigation bits, which contributes to longer coherent integration. The latter carrying navigation information can be used for both pseudo range meas-urement and navigation information demodulation. Traditional tracking techniques adopt only one channel （ pilot/data ） , however, they waste 3dB available signal power which lowers tracking accuracy. In this paper, the linear combined tracking technology is used for MBOC signal tracking. For the engineering application an innovative method is proposed which uses the BOC （1,1） as the reference signal. At the end of paper, the simulation validates the performances of this method.
出处
《空间电子技术》
2014年第1期92-96,共5页
Space Electronic Technology
