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为了克服原有抗多径算法在偏移二进制载波(BOC)信号上性能不如粗捕码(coarse/acquisition code,C/A码)的缺点,并消除BOC信号在跟踪时特有的多峰模糊特性,将一种新的参考码应用在BOC信号的跟踪中,并与窄相关器以及高分辨相关器(HRC)技术进行了比较,分别给出了多径误差包络,从仿真结果中得出了最佳参考码码型,并根据最佳参考码分析了成形(Shaping)相关器的噪声性能。Shaping相关器消除了多峰模糊的特点,并在多径误差包络上要优于窄相关器以及HRC算法,也很容易在原有基础上修改实现。该研究为未来的导航接收机中Shaping相关器的应用打下了坚实的基础。
In order to overcome the shortcomings of the original anti-multipath algorithm on off-axis binary carrier (BOC) signals, such as coarse / acquisition code (C / A code) and eliminate the multi-peak ambiguity characteristic , A new reference code is applied to the tracking of BOC signals and compared with narrow correlators and high resolution correlator (HRC) techniques. The multipath error envelopes are given respectively and the results are obtained from the simulation results The best reference code pattern was analyzed and the noise performance of the Shaping correlator was analyzed based on the best reference code. Shaping correlator eliminates the characteristics of multi-peak ambiguity, and is better than the narrow correlator and HRC algorithm in the multipath error envelope, and it is easy to modify the implementation based on the original. The research laid a solid foundation for the application of Shaping correlator in future navigation receivers.