Now showing items 1-8 of 8
Demand for electricity in Virginia
(MIT Press, 1978)
Bearing estimation using a large towed array
(Acoustical Society of America, 1975)
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 ...
Passive range estimation using subarray parallax
(Acoustical Society of America, 1979-05)
Consider a large aperture linear array which is detecting coherent radiation from a source. Suppose that the array is processed as a string of subarrays consisting of adjacent sensors. Assume that the signal is a plane ...
Bearing estimation using a perturbed linear array
(Acoustical Society of America, 1977-06)
A linear hydrophone array which is towed in the ocean is subject to snakelike bending. If the array is processed as if it was truly linear, the author has shown that the bending causes a deflection of the measured bearing ...
Maximum likelihood estimation of the position of a radiating source in a waveguide
(Acoustical Society of America, 1979-09)
An array of sensors is receiving radiation from a source of interest. The source and the array are in a one-or two-dimensional waveguide. The maximum-likelihood estimators of the coordinates of the source are analysed under ...
Estimating bearing when the source is endfire to an array
(Acoustical Society of America, 1979-03)
Consider the problem of estimating the direction of arrival of a plane wave using a linear array of length L with M sensors. Let 0 denote the direction with respect to the array axis. Assume that we know that 0 >0. The ...
On errors in some papers on array processing
(Acoustical Society of America, 1979-02)
Some errors in the literature are noted concerning the calculation of the maximum-likelihood estimator.
Processing spatially aliased arrays
(Acoustical Society of America, 1978-09)
A linear array can detect a plane wave signai at a wrong bearing if the signal wavelengths are shorter than twice the distance between the closest adjacent sensors. This penomenon, called spatial aliasing, is most pronounced ...