[1]曹华杰,刘源. 北斗/GPS伪卫星定位系统中信号跟踪算法研究[J].计算机技术与发展,2017,27(09):179-181.
　CAO Hua-jie,LIU Yuan. Research on Signal Tracking Algorithm in Beidou/GPS Pseudo Satellite Positioning System[J].,2017,27(09):179-181.
点击复制

 北斗/GPS伪卫星定位系统中信号跟踪算法研究()
分享到：

《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
27
期数:
2017年09期
页码:
179-181
栏目:
应用开发研究
出版日期:
2017-09-10

文章信息/Info

Title:
 Research on Signal Tracking Algorithm in Beidou/GPS Pseudo Satellite Positioning System
文章编号:
1673-629X（2017)09-0179-03
作者:
 曹华杰; 刘源
 西南交通大学 信息科学与技术学院
Author(s):
 CAO Hua-jie; LIU Yuan
关键词:
 ; GPS/北斗; 伪卫星; 跟踪算法; Early-Late; 动态跟踪
Keywords:
 ; GPS/BDS; pseudo satellite; tracking algorithm; Early-Late; dynamic tracking
分类号:
TP301.6
文献标志码:
A
摘要:
 北斗/GPS伪卫星定位系统主要应用在卫星信号遮挡严重的区域,能独立或辅助增强北斗/GPS卫星定位.伪卫星信号的捕获跟踪是进行定位解算的前提,针对伪卫星信号存在跟踪不稳定的情况,在详细分析了伪卫星信号生成和捕获跟踪算法原理的基础上,基于模块复用思想,提出了一种捕获跟踪一体化方案.该方案中的捕获算法采用传统的滑动捕获算法,码跟踪算法采用Early-Late算法,在信号解调的过程中采用Costas PLL载波跟踪环路.通过采集的GPS卫星信号仿真可发现跟踪稳定后即时码的能量最大,即时码保持稳定表明进入稳定跟踪状态.在FPGA硬件平台验证了该方案,并对比分析了存在多普勒频偏和无频偏情况下的性能.仿真结果表明,该方案在多普勒频率偏移下依然能够有效、稳定地跟踪解调出导航信号.
Abstract:
 Beidou/GPS pseudo satellite positioning system is mainly used in the area of satellite signal shielding seriously and it can be in-dependent or assistant enhancement of the Beidou/GPS satellite positioning. Pseudo satellite signal acquisition and tracking is the precon-dition of positioning solution. Aiming at the situation of tracking instability for pseudo satellite signal,after the pseudo satellite signal gen-eration as well as acquisition has been analyzed in detail,an integrated scheme of acquisition and tracking based on model reuse is pro-posed. The capture algorithm is adoption of traditional sliding capture algorithm and the tracking algorithm is the Early-Late in this scheme,and Costas PLL carrier tracking loop has been employed in the process of signal demodulation. Through simulation of the GPS satellite signal,it is found that the energy of the real time code is the largest after the instant code remains stable. Experiments for verifica-tion on this scheme on the FPGA hardware platform have been conducted as well as the contrast analysis on its performances on the con-ditions of Doppler frequency offset and non-frequency offset. The simulation results show that the proposed scheme in the presence of Doppler frequency offset has operated stably and effectively in signal tracking and demodulation.

相似文献/References:

[1]张志宏,吴庆波,邵立松,等.基于飞腾平台TOE协议栈的设计与实现[J].计算机技术与发展,2014,24(07):1.
　ZHANG Zhi-hong,WU Qing-bo,SHAO Li-song,et al. Design and Implementation of TCP/IP Offload Engine Protocol Stack Based on FT Platform[J].,2014,24(09):1.
[2]梁文快,李毅. 改进的基因表达算法对航班优化排序问题研究[J].计算机技术与发展,2014,24(07):5.
　LIANG Wen-kuai,LI Yi. Research on Optimization of Flight Scheduling Problem Based on Improved Gene Expression Algorithm[J].,2014,24(09):5.
[3]黄静,王枫,谢志新,等. EAST文档管理系统的设计与实现[J].计算机技术与发展,2014,24(07):13.
　HUANG Jing,WANG Feng,XIE Zhi-xin,et al. Design and Implementation of EAST Document Management System[J].,2014,24(09):13.
[4]侯善江[],张代远[][][]. 基于样条权函数神经网络P2P流量识别方法[J].计算机技术与发展,2014,24(07):21.
　HOU Shan-jiang[],ZHANG Dai-yuan[][][]. P2P Traffic Identification Based on Spline Weight Function Neural Network[J].,2014,24(09):21.
[5]李璨,耿国华,李康,等. 一种基于三维模型的文物碎片线图生成方法[J].计算机技术与发展,2014,24(07):25.
　LI Can,GENG Guo-hua,LI Kang,et al. A Method of Obtaining Cultural Debris’ s Line Chart Based on Three-dimensional Model[J].,2014,24(09):25.
[6]翁鹤,皮德常. 混沌RBF神经网络异常检测算法[J].计算机技术与发展,2014,24(07):29.
　WENG He,PI De-chang. Chaotic RBF Neural Network Anomaly Detection Algorithm[J].,2014,24(09):29.
[7]刘茜[],荆晓远[],李文倩[],等. 基于流形学习的正交稀疏保留投影[J].计算机技术与发展,2014,24(07):34.
　LIU Qian[],JING Xiao-yuan[,LI Wen-qian[],et al. Orthogonal Sparsity Preserving Projections Based on Manifold Learning[J].,2014,24(09):34.
[8]尚福华,李想,巩淼. 基于模糊框架-产生式知识表示及推理研究[J].计算机技术与发展,2014,24(07):38.
　SHANG Fu-hua,LI Xiang,GONG Miao. Research on Knowledge Representation and Inference Based on Fuzzy Framework-production[J].,2014,24(09):38.
[9]叶偲,李良福,肖樟树. 一种去除运动目标重影的图像镶嵌方法研究[J].计算机技术与发展,2014,24(07):43.
　YE Si,LI Liang-fu,XIAO Zhang-shu. Research of an Image Mosaic Method for Removing Ghost of Moving Targets[J].,2014,24(09):43.
[10]余松平[][],蔡志平[],吴建进[],等. GSM-R信令监测选择录音系统设计与实现[J].计算机技术与发展,2014,24(07):47.
　YU Song-ping[][],CAI Zhi-ping[] WU Jian-jin[],GU Feng-zhi[]. Design and Implementation of an Optional Voice Recording System Based on GSM-R Signaling Monitoring[J].,2014,24(09):47.

更新日期/Last Update: 2017-10-25