A New Approach to Local Signal Design for Enhanced TMBOC Signal Tracking

We present a new approach to the design of the signal generated locally to enhance the performance in tracking of the time-multiplexed binary offset carrier (TMBOC) signal. Considering that the advantages of the TMBOC signal such as a high degree resistance to noise and multipath result from its BOC(6,1) segments, we propose to design the local signal with exploiting only BOC(6,1) segments, which is different from the conventional design approach using both BOC(6,1) and BOC(1,1) segments of the TMBOC signal. Separating and re-grouping the components composing the BOC(6,1) segments, we produce a local signal set and develop a special correlation procedure tailored to the local signal set. Numerical results indicate that the proposed approach achieves the TMBOC signal tracking with a higher degree of robustness to noise and multipath influences over that of the conventional approach in various urban canyon environments.