DocumentCode :
2956818
Title :
Ranging using spectral information
Author :
Abel, Jonathan ; Gibbons, Greg
Author_Institution :
Tetra Syst. Inc., Palo Alto, CA, USA
fYear :
1990
fDate :
3-6 Apr 1990
Firstpage :
2783
Abstract :
Information inequality is used to place lower bounds on the variance of unbiased spectrum-based range estimates. Bounds are also presented for the case of imprecisely known source spectrum shape and signal propagation model. A closed-form range estimator is developed for the case of deep ocean acoustic waves, and is shown to approach the information inequality for signals with large in-band signal-to-noise ratio. It is shown that spectrum-based range estimates are more accurate than those based on signal arrival times for sources far (at least a few array lengths) from a sensor array
Keywords :
acoustic signal processing; estimation theory; sonar; underwater sound; acoustic signal processing; closed-form range estimator; deep ocean acoustic waves; in-band signal-to-noise ratio; information inequality; signal propagation model; source spectrum shape; spectrum-based range estimates; Acoustic propagation; Acoustic sensors; Acoustic waves; Cramer-Rao bounds; Gaussian noise; Oceans; Sensor arrays; Sensor phenomena and characterization; Shape; Signal to noise ratio; Underwater acoustics; Water resources;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
ISSN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.1990.116203
Filename :
116203
Link To Document :
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