Confidence Bounds for Magnitude-Squared Coherence Estimates.
Abstract
The main emphasis of the talk was on explaining coherence and its usefulness. The paper given in the coherence record emphasizes how to estimate coherence and how accurately this can be done. In underwater acoustics where signals are digitally processed at the outputs of two or more receiving sensors, it is desirable to estimate the coherence spectrum, both for detection and position estimation. A processing technique for computing arbitrary confidence bounds for stationary Gaussian signals is presented. Now computationally difficult examples are given for 80-95 percent confidence with independent averages of 8, 16, 32, 64, and 128. A discussion of the computational difficulties together with algorithmic details (including the FORTRAN program) are presented.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 13, 1978
- Accession Number
- ADA057408
Entities
People
- Everett H. Scannell Jr
- G. Clifford Carter
Organizations
- Naval Underwater Systems Center