Joint acquisition strategy for BDS B1C signal
-
摘要: 目前对含有导频通道的新信号的捕获研究,主要是设计联合捕获算法,提高功率利用率以提升接收性能,分为等长与非等长相干积分联合算法两类. 本文针对北斗B1C信号,深入分析了三种等长相干积分联合算法的加权问题,并解释了相干联合与差分联合算法的联系. 理论和仿真结果表明,相干联合算法具有更优的性能;进一步,本文结合最优相干积分时间理论给出捕获参数设计方案,对比了不同场景条件下等长与非等长相干积分联合算法的性能,给出了捕获B1C信号的优化策略.Abstract: At present, the research on the acquisition of new signals with pilot channel mainly focused on the design of joint acquisition algorithms, which can increase power utilization so as to improve receiving performance. These algorithms can be divided into two categories: equal length and unequal length coherent integration joint algorithms. For BDS B1C signal, this paper analyzed the weighting problem of three equal length coherent integral joint algorithms, and the relationship between coherent and differential joint algorithm is explained. The theoretical and simulation results show that the coherent joint algorithm has better performance. Furthermore, the design scheme of acquisition parameters is proposed based on the theory of optimal coherent integration time. The performance of the equal and unequal length coherent integration algorithm is compared under different conditions, and the optimal strategy for acquiring B1C signal is given.
-
[1] 谢钢. GPS原理与接收机设计[M]. 北京:电子工业出版社, 2009. [2] BORIO D, O'DRISCOLL C, LACHAPELLE G. Coherent, noncoherent, and differentially coherent combining techniques for acquisition of new composite GNSS signals[J]. IEEE transactions on aerospace & electronic systems, 2009, 45(3): 1227-1240. DOI: 10.1109/TAES.2009.5259196. [3] BORIO D, O'DRISCOLL C, LACHAPELLE G. Composite GNSS signal acquisition over multiple code periods[J].IEEE transactions on aerospace & electronic systems, 2010, 46(1): 193-206. DOI: 10.1109/TAES.2010.5417156. [4] TA T H, DOVIS F, MARGARIA D, et al. Comparative study on joint data/pilot strategies for high sensitivity Galileo E1 open service signal acquisition[J]. IET radar, sonar & navigation, 2010, 4(6): 764-779. DOI: 10.1049/iet.rsn.2009.0256. [5] 田丰, 唐小妹, 欧钢. 数据和导频通道的功率加权联合捕获算法[J]. 国防科技大学学报, 2016, 38(2): 112-116. [6] LI Y F,CS N,AKOS D M. Design and implementation of an open-source BDS-3 B1C/B2a SDR receiver[J]. GPS solutions, 2019, 23(3). DOI: 10.1007/s10291-019-0853-z. [7] WANG Y W, LI W G,QIAN T R, et al. Data/pilot combination strategies for compass B1C signal acquisition[J]. International journal of satellite communications & networking, 2018,37(1) DOI: 10.1002/sat.1281. [8] 林红磊, 唐小妹, 王飞雪. 一种改进的导频与数据通道组合捕获算法[J]. 全球定位系统, 2013, 38(4): 1-6. [9] 王飞雪, 郭桂蓉. 二相编码信号分段相关视频积累检测的最优中频积累时间[J]. 国防科技大学学报, 1999, 21(1): 71-75. [10] 朱祥维, 王飞雪. 基于平方律检波的二相编码信号分段相关视频积累方法研究[J]. 电子学报, 2005, 33(3): 545-548. [11] 中国卫星导航系统管理办公室. 北斗卫星导航系统 空间信号接口控制文件公开服务信号B1C(1.0版)[R/OL]. (2017-12-27)[2020-6-29]. http://www.beidou.gov.cn. [12] 姚铮, 陆明泉, 冯振明. 正交复用BOC调制及其多路复合技术[J]. 中国科学, 2010, 40(5):575-580.
点击查看大图
计量
- 文章访问数: 340
- HTML全文浏览量: 79
- PDF下载量: 61
- 被引次数: 0