Optimal localization of partially known signals in unknown noise fields

Most methods for sensor array signal processing require the covariance matrix of the background noise to be known. Various techniques for overcoming this limitation have recently been proposed. While most of these are based on assumptions on the noise, we present herein an alternative approach based on partial knowledge of the signals. Methods yielding minimum variance estimates for the model in question are presented and analyzed.<<ETX>>

[1]  Ilan Ziskind,et al.  Maximum likelihood localization of multiple sources by alternating projection , 1988, IEEE Trans. Acoust. Speech Signal Process..

[2]  Bjorn Ottersten,et al.  Detection and Estimation in Sensor Arrays Using , 1991 .

[3]  Bhaskar D. Rao PERFORMANCE ANALYSIS OF SUBSPACE BASED METHODS , 1988 .

[4]  Mats Viberg Sensitivity of parametric direction finding to colored noise fields and undermodeling , 1993, Signal Process..

[5]  Petre Stoica,et al.  MUSIC, maximum likelihood, and Cramer-Rao bound , 1989, IEEE Transactions on Acoustics, Speech, and Signal Processing.

[6]  Thomas Kailath,et al.  Eigenstructure methods for direction of arrival estimation in the presence of unknown noise fields , 1986, IEEE Trans. Acoust. Speech Signal Process..

[7]  Petre Stoica,et al.  Maximum likelihood methods for direction-of-arrival estimation , 1990, IEEE Trans. Acoust. Speech Signal Process..

[8]  Noise correlation functions for arbitrary receiver orientation and steering direction in vertically anisotropic, azimuthally isotropic noise fields , 1980 .

[9]  A. Lee Swindlehurst,et al.  A Performance Analysis of Subspace-Based Methods in the Presence of Model Errors: Part &-Multidimensional Algorithms , 1993 .

[10]  Steven Kay,et al.  Maximum likelihood estimation for array processing in colored noise , 1993, 1993 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[11]  Björn E. Ottersten,et al.  Instrumental variable approach to array processing in spatially correlated noise fields , 1994, IEEE Trans. Signal Process..

[12]  Björn E. Ottersten,et al.  Detection and estimation in sensor arrays using weighted subspace fitting , 1991, IEEE Trans. Signal Process..

[13]  J. F. Böhme,et al.  Estimation of spectral parameters of correlated signals in wavefields , 1986 .

[14]  Benjamin Friedlander,et al.  Sensitivity analysis of the maximum likelihood direction finding algorithm , 1989, Twenty-Third Asilomar Conference on Signals, Systems and Computers, 1989..

[15]  A. Lee Swindlehurst,et al.  A Performance Analysis ofSubspace-Based Methods in thePresence of Model Errors { Part I : The MUSIC AlgorithmA , 1992 .

[16]  R. O. Schmidt,et al.  Multiple emitter location and signal Parameter estimation , 1986 .

[17]  Fu Li,et al.  Performance degradation of DOA estimators due to unknown noise fields , 1992, IEEE Trans. Signal Process..

[18]  Ilan Ziskind,et al.  On unique localization of multiple sources by passive sensor arrays , 1989, IEEE Trans. Acoust. Speech Signal Process..