信道带宽对码相关参考波形算法码跟踪精度的影响

相关文献对码相关参考波形算法码跟踪精度的研究，主要是针对无限信道带宽条件下，仿真分析闸宽参数对码跟踪精度的影响，并未分析信道带宽影响。因此，推导了码相关参考波形算法码跟踪精度表达式，分析信道带宽对码相关参考波形算法跟踪精度的影响并进行仿真验证。结论表明，在无限带宽下，减小闸波宽度可提高码跟踪精度，但是在带限条件下，闸波宽度存在最优值。该结论可用于指导卫星导航接收机的码相关参考波形算法设计。
The analysis of code tracking accuracy for CCRW（code correlation reference waveform）from the literature is mainly on the assumption for the infinite channel bandwidth and the simulation that how the gate width parameters affect the code tracking accuracy. Therefore, the analytical expression of code tracking accuracy was derived. The effect of signal channel bandwidth on CCRW tracking accuracy was analyzed and verified. The analysis shows that the code tracking accuracy with unlimited channel bandwidth can be improved by reducing the width of the gate wave, but there is an optimal value of the gate width in the band limited condition. The research results can be used to guide CCRW algorithm design for GNSS receivers．