21，Quazi Azizul H. An Overview on the Time Delay Estimate in Active and P assive Systems for Target Localization. IEEE Trans. on Acoust., Speech, Signal P rocessing, 1981,29(3):527～533.
32，Weiss Anthony J, Ehud Weinstein. Fundamental Limitations in Passive T ime Delay Estimation-Part 1: Narrow-Band Systems. IEEE Trans. on Acoust., Speech , Signal Processing, 1983,31(2):472～485.
43，Carter Clifford G. Coherence and Time Delay Estimation. Proc. IEEE 19 87,75(2):236～255.
54，Ariela Zeira, Schultheiss Peter M. Realizable Lower Bounds for Time D elay Estimation. IEEE Trans. on Signal Processing, 1993,41(11):3102～3113.
65，Siu-Kay Chow, Schultheiss Peter M. Delay Estimation Using Narrow-Band Processes. IEEE Trans. on Acoust., Speech, Signal Processing, 1981,29(3):478～4 84.
76，Knapp Charles H, Clifford Carter. The Generalized Correlation Method for Estimation of Time Delay. IEEE Trans. on Acoust., Speech, Signal Processing, 1976,24(4):320～326.
87，Clifford Carter G. Time Delay Estimation. AD-A025408,1976.
