Sensitivity of coherent and incoherent localization methods

Author

Rendas, M. João ; Biencenu, G. ; Moura, José M F

Author_Institution

CNRS, Univ. de Nice-Sophia Antipolis, Valbonne, France

Volume

1

fYear

1994

fDate

13-16 Sep 1994

Abstract

This paper presents a comparative study of tile sensitivity of coherent and incoherent localization methods to modeling errors. It is based on the use of performance analysis tools: (i) the Cramer Rao lower bound, that establishes a bound on the precision of parametric estimates: (ii) a generalization of the classical ambiguity function that assesses the global performance under incorrect modeling assumptions, e.g. introduction of biases. Results showing the behaviour of the two methods are presented for specific examples

Keywords

acoustic signal processing; acoustic wave propagation; array signal processing; error analysis; parameter estimation; sensitivity; underwater sound; Cramer Rao lower bound; acoustic sources; ambiguity function; biases; coherent localization methods; global performance; incoherent localization methods; modeling errors; parametric estimates; performance analysis tools; propagation structure; receiving array; sensitivity; underwater channel; Acoustic noise; Acoustic propagation; Acoustic sensors; Delay effects; Delay estimation; Performance analysis; Power system modeling; Sensor arrays; Sensor phenomena and characterization; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS '94. 'Oceans Engineering for Today's Technology and Tomorrow's Preservation.' Proceedings

Conference_Location

Brest

Print_ISBN

0-7803-2056-5

Type

conf

DOI

10.1109/OCEANS.1994.363989

Filename

363989