扩频定位系统中一种利用导引符号提取载波差分相位的方法

潘文生; 唐友喜; 赵宏志; 李少谦; 李英涛

扩频定位系统中一种利用导引符号提取载波差分相位的方法

计量
- 文章访问数: 2317
- HTML全文浏览量: 87
- PDF下载量: 667
- 被引次数: 0
出版历程
- 收稿日期: 2004-01-14
- 修回日期: 2004-08-09
- 刊出日期: 2005-07-19

A Method of Acquiring Carrier Difference Phase in Spread Spectrum Orientation System by Pilot Symbols

摘要

摘要: 考虑利用载波相位进行测距的扩频无线电导航系统,该文提出了一种基于导引符号的两导航台载波差分相位的提取方法。该方法利用扩频码区分出来自不同导航台的发射信号,同时抑制导航台间的相互干扰。给出了该方法提取两导航台载波差分相位的数学模型,并分析了该方法提取的差分相位的均值及误差,进行了计算机仿真。结果表明,在高信噪比环境中,分析及仿真结果十分相近。
- 无线电导航; 定位; 扩频; 载波相位; 差分; 导引符号
Abstract: Considering the spread spectrum orientation systems using difference carrier phase to measure distance, this paper proposed a method for acquiring difference carrier phase by using pilot symbol. Using the spread-spectrum codes, signals from different transmitters can be distinguished, and the interstation interference is depressed. In the paper, the mathematical model for the proposed method is deduced, and the mean and variance of the acquired carrier difference phase of the proposed method are analyzed and simulated. The results show that the method is valid.

HTML全文

参考文献(1)

程禄,焦传道,黄德鸣.船舶导航定位系统[M].北京:国防工业出版社,第五章.[2]张守信.GPS卫星测量定位理论与应用[M].长沙:国防科技大学出版社,1996,第一章.[3]Gu Xiaogang, Lipp A. DGPS positioning using carrier phase for precision navigation[c]. IEEE Position Location and Navigation Symposium, 1994, Las Vegas, Nevada, 11-15 April, 1994:410-417.[4]Koolpiruck D, Tantaratana S. A joint PN phase and carrier phase acquisition scheme using an auxiliary sequence for DS/SS system[c]. 2001. ICC 2001. IEEE International Conference on Communications, 11-14 June, 2001, Vol. 2:535-539.[5]Zhuang W. Performance analysis of GPS carrier phase observable[J].IEEE Trans. on Aerospace and Electronic Systems.1996, 32 (2):754-[6]Jwo D J. Optimisation and sensitivity analysis of GPS receiver tracking loops in dynamic environments[J].IEE Proc-Radar,Sonar and Navigation.2001, 148 (4):241-250[7]Ali Abu-Rgheff M N, Sumartana I G. Carrier phase tracking in digital radio communications[J].Electronics Letters.1998, 34(24):2306-2307[8]Baissas M A R, Sayeed A M. Pilot-based estimation of timevarying multipath channels for coherent CDMA receivers[J].IEEE Trans on Signal Processing.2002, 50(8):2037-2049[9]Cavers J K. An analysis of pilot symbol assisted modulation for Rayleigh fading channels[J].IEEE Trans. on Veh. Technol.1991,40:686-693[10]熊皓,等.无线电波传播[M].北京:电子工业出版社,2000,第三篇地面及地下电波传播.[11]Yost R A, Boyd R. A modified PN code tracking loop: Its perform ance analysis and comparative evaluation[J].IEEE Trans. on Communications.1982, 30(5):1027-1036[12]Pursley M. Performance evaluation for phase-coded spreadspectrum multiple-access communication-Part Ⅰ: System ana lysis[J].IEEE Trans. on Communications.1977, 25(8):795-799[13]Kay S. Statistically/computationally efficient frequency estima tion[c]. Proceedings of IEEE International Conference in Acoustic Speech and Signal Processing, 1988:2292-2295.

施引文献

资源附件(0)

访问统计