Title :
Accuracy of source localization using multipath delays
Author :
Friedlander, Benjamin
Author_Institution :
Saxpy Comput. Corp., Sunnyvale, CA, USA
fDate :
7/1/1988 12:00:00 AM
Abstract :
The depth and range of underwater source can be estimated from measurements of propagation delay differences along multiple propagation paths. The accuracy of depth and range estimation using the Cramer-Rao lower bound is studied. The formulas derived can be used in conjunction with a propagation medium (nonconstant velocity profile). Explicit formulas for the bounds are derived for the case of homogeneous medium (constant velocity profile). Numerical examples are presented to illustrate the behavior of these bounds
Keywords :
acoustic signal processing; signal detection; sonar; underwater sound; Cramer-Rao lower bound; acoustic signal processing; constant velocity profile; depth estimation; multipath delays; multiple propagation paths; nonconstant velocity profile; propagation delay differences; range estimation; source localization; underwater source; Acoustic propagation; Acoustic sensors; Application software; Delay estimation; Instruments; Propagation delay; Sensor arrays; Sensor systems; Sonar equipment; Surveillance;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
