An analytic overview of long range passive detection and localization in an inhomogeneous ocean
An analytic summary or overview of the problem of long range passive source detection and localization is presented. The principal aims are to provide an analytic basis for developing effective weak-signal detection and estimation algorithms and performance measures in a model-based approach, when the desired source (or sources) are not surely known to be present p(H{sub 1})<1, in a general ambient noise field due primarily to surface or near-surface noise mechanisms. In addition to threshold detection and estimation (when (pH{sub 1})<1: signal not surely present) with correlated space and time noise samples, procedures for modeling the random acoustic noise and signal fields are outlined, from the viewpoint of the ocean as an inhomogeneous acoustic waveguide, {nabla}c{ne}0, with boundaries, and arbitrary (near) surface distributions of noise sources. The latter are required to specify these otherwise canonical results to the present class of problems. The Report concludes with a short list of next steps, and references to pertinent supporting material.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5703029
- Report Number(s):
- UCRL-ID-109335; ON: DE92007504
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ACOUSTIC RADAR
ANALYTICAL SOLUTION
SUBMARINES
DETECTION
ALGORITHMS
GREEN FUNCTION
INTEGRAL EQUATIONS
NOISE
OCEANOGRAPHY
SENSITIVITY
SIGNALS
UNDERWATER
WAVE PROPAGATION
EQUATIONS
FUNCTIONS
LEVELS
MATHEMATICAL LOGIC
MEASURING INSTRUMENTS
RADAR
RANGE FINDERS
SHIPS
450000* - Military Technology
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990200 - Mathematics & Computers