Bearing Estimation Using a Large Towed Array.
Abstract
When a towed array of hydrophones is significantly nonlinear due to bending, ordinary linear array beamforming gives a biased estimate of the true source bearing. By processing the array as a sequence of smaller aperture subarrays and then computing the median of the subarray bearings, the variation due to bending is reduced and a reasonably precise estimate is obtained if the average bending angle with respect to the nominal axis is zero. The median and mean subarray bearing is analyzed for a theoretical statistical model and is tested using artificial data for a sinusoidal and random bending model.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1974
- Accession Number
- ADA003607
Entities
People
- Melvin J. Hinich
- William Rule
Organizations
- Carnegie Mellon University