Title :
High resolution spatio-temporal analysis by an active array
Author :
Gounon, P. ; Bozinoski, S.
Author_Institution :
CEPHAG, ENSIEG, St. Martin d´´Heres, France
Abstract :
We present in this paper a high resolution method for the joint estimation of directions of arrival (DOA) and travel time (TT). This algorithm applies to an active antenna for which the transmitted signal of some sources is known. We show how to take into account the a priori information about the signal in MUSIC. The method is presented and a non asymptotic statistical performance analysis using perturbation expansions is applied. The major result, is a formula for mean-squared error of the DOA and TT estimations. Simulation results verify the analytically predicted performance
Keywords :
active antenna arrays; direction-of-arrival estimation; sonar arrays; sonar signal processing; statistical analysis; MUSIC; active antenna; active array; active sonar; directions of arrival estimation; high resolution spatio-temporal analysis; mean-squared error; nonasymptotic statistical performance analysis; perturbation expansions; simulation; travel time estimation; Additive noise; Covariance matrix; Decorrelation; Delay effects; Fourier transforms; Frequency; Oceans; Propagation delay; Sensor arrays; Signal resolution;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on
Conference_Location :
Detroit, MI
Print_ISBN :
0-7803-2431-5
DOI :
10.1109/ICASSP.1995.479759
