New HB-weighted time delay estimation algorithm under impulsive noise environment  

作　　者：Sun Yongmei Qiu Tianshuang 

机构地区：[1]School of Electronic and Information Engineering, Dalian Univ. of Technology, Dalian 116024, P. R. China [2]School of Electric and Information Engineering, Dalian Jiaotong Univ., Dalian 116028, P. R. China

出　　处：《Journal of Systems Engineering and Electronics》2008年第6期1102-1108,共7页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China (60372081);China Postdoctoral Science Foundation (20070410347);the Doctor Startup Fund of Liaoning Province (20071076)

摘　　要：The traditional HB-weighted time-delay estimation （TDE） method degenerates under the impulsive noise environment. Two new time-delay estimation methods are proposed based on fractional lower order statistics （FLOS） according to the impulsive characteristics of fractional lower order α-stable noises. Theoretic analysis and computer simulations indicate that the proposed covariation based HB weighted （COV-HB） algorithm can suppress impulsive noises in one received signal for 1 ≤α≤ 2, whereas the other proposed fractional lower order eovariancebased HB weighted （FLOC-HB） algorithm has robust performance under arbitrary impulsive noise conditions for the whole range of 0 〈α≤ 2.The traditional HB-weighted time-delay estimation （TDE） method degenerates under the impulsive noise environment. Two new time-delay estimation methods are proposed based on fractional lower order statistics （FLOS） according to the impulsive characteristics of fractional lower order α-stable noises. Theoretic analysis and computer simulations indicate that the proposed covariation based HB weighted （COV-HB） algorithm can suppress impulsive noises in one received signal for 1 ≤α≤ 2, whereas the other proposed fractional lower order eovariancebased HB weighted （FLOC-HB） algorithm has robust performance under arbitrary impulsive noise conditions for the whole range of 0 〈α≤ 2.

关 键 词：HB weighted time delay COVARIATION fractional lower order covariance. 

分 类 号：O17[理学—数学]