卫星导航信号捕获的一种高效相关算法
|
摘要
信号捕获的相关层实现在整个接收机的硬件资源中占据了重要的比重.为了能够降低量化损耗和减少相关层所需的硬件资源,论文提出了一种高效的相关算法.相比传统实现方法,论文所提算法能够将加法树所需硬件资源降低1/2,同时量化损耗减少约0.3dB.该算法对卫星导航接收机的低成本和低功耗实现具有重要的参考价值.
The implementation of correlation layer in signal acquisition take up an important proportion of hardware resource in GNSS receivers.In order to reduce the quantization loss and used hardware resource,a novel correlation method with high efficiency is proposed.The resource of adder tree in acquisition module of proposed is half of traditional method,and the quantization loss is reduced by 0.3dB,which could be used in GNSS receivers with low cost and power consumption demand.
The implementation of correlation layer in signal acquisition take up an important proportion of hardware resource in GNSS receivers.In order to reduce the quantization loss and used hardware resource,a novel correlation method with high efficiency is proposed.The resource of adder tree in acquisition module of proposed is half of traditional method,and the quantization loss is reduced by 0.3dB,which could be used in GNSS receivers with low cost and power consumption demand.
引文
[1]谢钢著.GPS原理与接收机设计[M].北京:电子工业出版社,2009.
[2]刘瀛翔.现代化导航信号高精度建模与接收技术研究[D].长沙:国防科学技术大学,2014.
[3] WEILER R M,BLUNT P,HODGART S,et al.The effect of cosine phased BOC modulation on the GNSS receiver search process[J].Journal of Navigation,2008(61):591-611.
[4] WARD P W.A Design technique to remove the correlation ambiguity in Binary Offset Carrier(BOC)spread spectrum signals[C].//Proceedings of US Institute of Navigation NTM Conference,San Diego,CA,2004:886-96.
[5] JULIEN O,MACABIAU C,CANNON M E,et al.Aspect:Unambiguous sine-BOC(n,n)acquisition tracking technique for navigation applications[J].IEEE Transactions on Aerospace and Electronic Systems,2011,43(1):150-62.
[6] BORIO D,O’DRISCOLL C.Coherent none-coherent and differential cobherent combining techniques for the acquisition of new composite GNSS signals[J].IEEE Trans.on Aerospace andElectronic System,2009,45(3):1227-1240.
[7] KAY S M.Fundamentals of statistical signal processing,volume II:detection theory[M].Upper Saddle River,New Jersey:Prentice Hall PTR,1993.
[8]KAPLAN E D,HEGARTY C J.Understanding GPS principles and applications[M].2ed.Beijing:Publishing House of Electronics Industry,2006.
[9] LIU Y X,LI B Y,TANG X M,et al.OLCD:Optimal linear combinational detector in GNSS signal acquisition[C]//ION PLANS,2014.
[10] PARKINSON,SPILKER B J.Global Positioning System:Theory and applications[M]. AIAA1996.
[2]刘瀛翔.现代化导航信号高精度建模与接收技术研究[D].长沙:国防科学技术大学,2014.
[3] WEILER R M,BLUNT P,HODGART S,et al.The effect of cosine phased BOC modulation on the GNSS receiver search process[J].Journal of Navigation,2008(61):591-611.
[4] WARD P W.A Design technique to remove the correlation ambiguity in Binary Offset Carrier(BOC)spread spectrum signals[C].//Proceedings of US Institute of Navigation NTM Conference,San Diego,CA,2004:886-96.
[5] JULIEN O,MACABIAU C,CANNON M E,et al.Aspect:Unambiguous sine-BOC(n,n)acquisition tracking technique for navigation applications[J].IEEE Transactions on Aerospace and Electronic Systems,2011,43(1):150-62.
[6] BORIO D,O’DRISCOLL C.Coherent none-coherent and differential cobherent combining techniques for the acquisition of new composite GNSS signals[J].IEEE Trans.on Aerospace andElectronic System,2009,45(3):1227-1240.
[7] KAY S M.Fundamentals of statistical signal processing,volume II:detection theory[M].Upper Saddle River,New Jersey:Prentice Hall PTR,1993.
[8]KAPLAN E D,HEGARTY C J.Understanding GPS principles and applications[M].2ed.Beijing:Publishing House of Electronics Industry,2006.
[9] LIU Y X,LI B Y,TANG X M,et al.OLCD:Optimal linear combinational detector in GNSS signal acquisition[C]//ION PLANS,2014.
[10] PARKINSON,SPILKER B J.Global Positioning System:Theory and applications[M]. AIAA1996.