Title :
Broadband source location using frequency-independent models [spectral estimation]
Author_Institution :
ENST, Paris, France
Abstract :
The author describes a method for locating multiple broadband sources from the signals received on any array of sensors. The key idea is to compute a frequency-dependent spatial model that represents the evolution of the (spatial) wavenumbers associated with each source inside the whole frequency band of interest. The location function is then obtained from the spatial transfer function of this model. Two estimators are proposed, one based upon a least-squares minimization, and one based upon a diagonalization of the extended covariance matrix
Keywords :
estimation theory; least squares approximations; spectral analysis; transfer functions; covariance matrix; diagonalization; estimators; frequency dependent autoregressive modelling; frequency-independent models; least squares minimisation; location function; multiple broadband sources; sensor array; spatial transfer function; spectral estimation; Amplitude modulation; Chirp modulation; Covariance matrix; Frequency dependence; Frequency estimation; Frequency modulation; Narrowband; Position measurement; Sensor arrays; Sensor phenomena and characterization;
Conference_Titel :
Spectrum Estimation and Modeling, 1988., Fourth Annual ASSP Workshop on
Conference_Location :
Minneapolis, MN
DOI :
10.1109/SPECT.1988.206154
