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论文:2016,Vol:34,Issue(5):867-873 |
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引用本文： |
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王嘉宁, 廉保旺, 吴鹏. 基于频域符号相关的北斗信号捕获新算法[J]. 西北工业大学学报 |
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Wang Jianing, Lian Baowang, Wu Peng. Method for BDS Signal Based on Sign Correlation in Frequency Domain[J]. Northwestern polytechnical university |
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| 基于频域符号相关的北斗信号捕获新算法 |
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| 王嘉宁, 廉保旺, 吴鹏 |
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| 西北工业大学 电子信息学院, 陕西 西安 710072 |
| 摘要: |
| 北斗导航信号中NH码会导致北斗导航信号的捕获概率降低和捕获时间的增加。为了实现对导航信号的快速捕获，在不进行码剥离的条件下提出了一种基于PMF-FFT结构的频域符号相关算法。该算法首先对接收到的北斗导航信号进行部分匹配滤波（PMF）和FFT，其次，对各个码相位对应PMF-FFT输出结果进行频域符号相关处理以消除符号跳变的影响，从而实现有符号跳变下，北斗导航信号的快速捕获。仿真结果表明，在相同的虚警概率和检测概率下，文中所提出的算法相对于PMF-FFT算法和PMF非相关积分算法分别有1.8 dB和1.5 dB的灵敏度提升。 |
| 关键词:
北斗信号
频域相关
捕获
PMF-FFT
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| Method for BDS Signal Based on Sign Correlation in Frequency Domain |
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| Wang Jianing, Lian Baowang, Wu Peng |
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| School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| Focusing on the problem of low acquisition probability and long acquisition time bought by NH code, under the condition of without NH code stripped, we propose a novel code acquisition algorithm based on PMF-FFT structure. Firstly, we obtained a set of frequency domain related vectors by PMF(partial matched filter) and FFT transform.Then we performed frequency domain correlation with the PMF-FFT results and sign sequences to remove the NH code. The theoretical analysis and simulation results show that compared with the PMF-FFT and PMF-incoherent algorithms the proposed algorithm can effectively improve the detection sensitivity, under the same condition. |
| Key words:
algorithms
Beidou navigation
frequency domain correlation
acquisition
PMF-FFT
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| 收稿日期: 2016-03-12
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金（61501430）资助 |
| 通讯作者:
Email： |
| 作者简介: 王嘉宁(1983-),西北工业大学博士研究生,主要从事卫星信号捕获研究。
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| 相关功能 |
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| 作者相关文章 |
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| 王嘉宁 在本刊中的所有文章 |
| 廉保旺 在本刊中的所有文章 |
| 吴鹏 在本刊中的所有文章 |
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