Title :
A wavelet-based algorithm for time delay and Doppler measurements
Author :
Niu, X.X. ; Ching, P.C. ; Chan, Y.T.
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong
Abstract :
This paper presents a wavelet-based algorithm for time delay estimation, specifically for linearly moving time delay estimation. The wideband cross ambiguity function (WBCAF) of the received signals at two spatially separated sensors is obtained by taking their cross wavelet transform. The global maximum of the WBCAF is then located which gives a direct measurement of the time delay and Doppler compression. The performance of the estimation algorithm is analysed, and the mean values together with the variances of the estimates are derived. Simulation results are provided to illustrate the potential of the method. The major disadvantage of the algorithm is its excessive computation complexity
Keywords :
Doppler measurement; computational complexity; delays; parameter estimation; signal processing; wavelet transforms; Doppler compression; Doppler measurement; computation complexity; cross wavelet transform; global maximum; linearly moving time delay estimation; mean values; performance; received signals; signal processing; simulation results; spatially separated sensors; time delay measurement; variances; wavelet based algorithm; wideband cross ambiguity function; Algorithm design and analysis; Analysis of variance; Computational modeling; Delay effects; Delay estimation; Doppler measurements; Performance analysis; Time measurement; Wavelet transforms; Wideband;
Conference_Titel :
Signals, Systems, and Electronics, 1995. ISSSE '95, Proceedings., 1995 URSI International Symposium on
Conference_Location :
San Francisco
Print_ISBN :
0-7803-2516-8
DOI :
10.1109/ISSSE.1995.498037
