The Improved Time-Delay Estimation Method Based on the Quadratic Correlation Function
Abstract: Generalized correlation of TDE and the second correlation of TDE verify that different weight functions will have different effects on accuracy of estimation. After comparing the advantages and disadvantages of different weight function, this paper improves the method of weighting theoretically. This method re-weights the second correlation and improves the accuracy of esti-mation of TDE in the condition of lower SNR accordingly. This paper contrasts the peak of traditional weight in TDE with the improved weight under the same condition of noise. Simulation results show that the improved weights can achieve higher accuracy of estimation under the condition of the low-power signals in the lower SNR compared with other weights.
文章引用: 刘 刚 , 邵建华 , 孙 超 (2014) 基于二次互相关的时延估计算法改进。 无线通信， 4， 63-71. doi: 10.12677/HJWC.2014.44011
 Carter, G.C. (1976) Time delay estimation. IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP’76, 10, 357-360.
 Knapp, C.H. and Carter, G.C. (1976) The generalized correlation method for estimation for time delay. IEEE Transactions on Acoustics, Speech and Signal Processing, 24, 320-327.
 刘永春, 陈琳 (2010) 基于广义互相关时延估计声源定位研究. http://www.paper.edu.cn/html/releasepaper/2010/08/366/
 梁宇, 马良, 纳霞, 陈昊 (2011) 基于关于互相关算法的时延估计. 计算机科学, 10, 454-456.
 Yap, J.H., Ghaheri-Niri, S. and Tafazolli, R. (2002) Accuracy and hear ability of mobile positioning in GSM and CDMA networks. Third International Conference on 3G Mobil e Com-munication Technologies, London, 350-354.
 唐娟, 行鸿彦 (2007) 基于二次互相关的时延估计方法. 计算机工程, 21, 265-267.
 孙洋, 徐慨, 杨海亮 (2013) 基于广义互相关时延估计算法的性能分析. 计算机与数字工程, 279, 33-34.
 郭俊成 (2007) 基于传声器阵列的声源定位技术研究. 南京航空航天大学, 南京.
 Gardner, W.A. (1992) Signal interception: Performance advantages of cyclic-feature detectors. IEEE Trans-actions on Communications, 40, 149-159.