基于局部相关函数插值的二进制偏移载波调制信号码相位估计与鉴相方法

李文刚; 王屹伟

doi:10.11999/JEIT170506

基于局部相关函数插值的二进制偏移载波调制信号码相位估计与鉴相方法

doi: 10.11999/JEIT170506

李文刚¹,
王屹伟¹

基金项目:

国家自然科学基金(61201136)，高等学校学科创新引智计划(B08038)

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- 文章访问数: 1271
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- 被引次数: 0
出版历程
- 收稿日期: 2017-05-26
- 修回日期: 2017-10-05
- 刊出日期: 2018-03-19

Code Phase Estimate and Discrimination Method for BOC Modulated Signal Based on Partial Correlation Function Interpolation

LI Wengang¹,
WANG Yiwei¹

Funds:

The National Natural Science Foundation of China (61201136), The Plan of Introducing Talents for Discipline Innovation in Universities (B08038)

摘要

摘要: 为了进一步提高卫星导航接收机对BOC(1,1)及其衍生类型调制信号的码鉴相的质量和跟踪能力，尤其是在高动态下的跟踪性能。该文提出一种基于局部相关函数插值的方法确定BOC(1,1)调制信号的码相位。该方法基于相关器阵列的结构，根据相关器阵列的输出值判断相关峰值的大致范围。利用广义延拓逼近的方法估计码相位的位置，同时在缺少延拓空间的情况下构造一个虚拟的相关器以完成对码相位的估计。该文具体分析了单侧相关器个数对牵入范围的影响，在此基础上对所提方法进行了计算机仿真实验。理论和仿真证明：所提方法能够在不增加过多硬件资源的条件下扩大码鉴相函数的线性牵入范围，进而能够提高接收机对于BOC调制信号的跟踪精度。
- 卫星导航 /
- 扩频码鉴相 /
- 跟踪 /
- BOC调制信号 /
- 广义延拓逼近
Abstract: In order to further improve the BOC (1,1) and its derived types modulated signals code discrimination quality and tracking ability of the satellite navigation receiver, especially in high dynamic. This paper proposes a method to determine the BOC (1,1) modulated signal code phase by partial correlation function interpolation. This method is based on the structure of correlators array, the approximate range of the correlation peak is determined by the correlators output. The generalized extended approximation method is used to estimate the code phase, and a virtual correlator is created in order to process the generalized extended approximation when the extended range does not exist. In this paper, the influence of the one side correlators number N on the linear pull-in region is analyzed in detail. On this basis, the computer simulation experiment for the proposed method is given. Theoretical and simulation results show: the proposed method can be used to enlarge the linear pull-in region of phase discrimination function without adding too much hardware resources, furthermore, it can improve the BOC modulated signals tracking accuracy for the receiver.
- Satellite navigation /
- Code phase discrimination /
- Tracking /
- Binary Offset Carrier (BOC) modulated signal /
- Generalized extened approximation

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参考文献(25)

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