Among the existing binary offset carrier (BOC) signal receiving technologies, the dual binary phase-shift keying tracking (DBT), originally designed for alternate BOC (AltBOC) modulated Galileo E5 signal and then extended to standard BOC signals, has its unique characteristics. It incorporates both single-band and dual-band processing schemes into a unified and simple structure to meet both requirements of improving ranging precision and anti-jamming. However, in this study, the authors propose that it is problematic to directly extend the DBT technique from the AltBOC signal to the standard BOC signal. The root cause of this problem lies in the fact that the cross-correlation functions between the received standard BOC signal and the local replicas in the upper and lower sidebands are not an ideal correlation triangle as the AltBOC case, but with some ripples. This leads to more complex behaviours when the DBT technique is applied to standard BOC signals. The rigorous theoretical analysis of this technique is given in respect of thermal noise performance in this study, which can be used not only to optimise the tracking loop parameters of DBT but also to compare the tracking performance of DBT and other tracking technologies.

中文翻译：

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标准BOC信号的双二进制相移键控跟踪的热噪声性能分析

在现有的二进制偏移载波（BOC）信号接收技术中，双二进制相移键控跟踪（DBT）原本是为备用BOC（AltBOC）调制的Galileo E5信号设计的，然后扩展到标准BOC信号，具有其独特的特性。它结合了单频带和双频带处理方案到一个统一而简单的结构中，以满足提高测距精度和抗干扰的要求。然而，在这项研究中，作者提出直接将DBT技术从AltBOC信号扩展到标准BOC信号是有问题的。此问题的根本原因在于，在接收到的标准BOC信号与上下边带中的本地副本之间的互相关函数不是AltBOC情况下的理想相关三角形，但有些涟漪。当DBT技术应用于标准BOC信号时，这会导致更复杂的行为。本文针对热噪声性能对这种技术进行了严格的理论分析，不仅可以用来优化DBT的跟踪环路参数，而且可以用来比较DBT和其他跟踪技术的跟踪性能。