Accession Number:

ADA199702

Title:

Estimators for Model-Based Passive Localization

Descriptive Note:

Memorandum rept.

Corporate Author:

SACLANT UNDERSEA RESEARCH CENTRE LA SPEZIA (ITALY)

Personal Author(s):

Report Date:

1988-07-01

Pagination or Media Count:

25.0

Abstract:

A comparative study is made of the performance of four different estimators as used in the matched-field technique of passive localization. The study is based on both real and synthesized data. In the synthesized data case, a comparison is made of the performance of the estimators for various signal-to- noise ratios. The four estimators studied are Buckers Estimators, which can be thought of as a spatial matched filter, and three likelihood-type estimators. The results indicate that the matched-field type estimator has a slightly better signal-to-noise performance than the others, but rather poor sidelobe behaviour, whereas for the likelihood-type estimator the sidelobe behaviour is quite good. Keywords Inverse problems Matched-field processing Model-based signal processing Passive localization Passive ranging Hydrophones Underwater acoustics Mediterranean Sea.

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE