ReportDOI
Capabilities of Multiplicative Array Processors as Signal Detector and Bearing Estimator
Leonard E Miller,J.S. Lee +1 more
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TLDR
In this paper, the performance of a multiplicative receiver array for signal detector and bearing estimator is investigated, and the probability density functions for the filter outputs of array models are obtained for the input signals consisting of monochromatic signals and narrowband additive Gaussian noise.Abstract:
: Investigation is made of a 'multiplicative' receiver array to determine its capability as signal detector and bearing estimator. The same analyses are made of the conventional square-law array for comparison purposes. The probability density functions for the filter outputs of array models are obtained for these arrays for the input signals consisting of monochromatic signals and narrowband additive Gaussian noise. The number of sensor elements, SNR, source bearing, and interelement noise correlation, are treated as parameters of the distribution, and their influences are displayed graphically. Based on these probability density functions for the square-law and multiplicative array processors, the authors then examine their performances as signal detectors and bearing estimators.read more
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Time delay estimation for passive sonar signal processing
TL;DR: In this article, an overview of applied research in passive sonar signal processing estimation techniques for naval systems is presented, where the authors present a discussion of this problem in terms of estimating the position and velocity of a moving acoustic source.
Journal ArticleDOI
Two-Way Pattern Grating Lobe Control for Distributed Digital Subarray Antennas
Bo-Kai Feng,D.C. Jenn +1 more
TL;DR: The approach to GL control presented here involves a combination of conventional suppression methods on the transmitting side and in the digital beamforming on the receiving side, filling the gaps between the subarrays with “virtual” elements, thus forming a contiguous array.
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Grating Lobe Suppression for Distributed Digital Subarrays Using Virtual Filling
Bo-Kai Feng,D.C. Jenn +1 more
TL;DR: In this article, a receiving array processing method is presented that synthesizes the antenna response of a contiguous array from the outputs of physically separated arrays of subarrays, which can be duplicated in a number of directions limited by the total number of elements.
ReportDOI
Ocean Surveillance Detection Studies. Part 1. Detection in Gaussian Mixture Noise. Part 2. An Investigation of Canonical Correlation as an Automatic Detection and Beamforming Technique
TL;DR: The theoretical results indicate that for a sufficient number of sensors, multiple, spatially separate signals, at the same frequency can be individually detected without knowledge of sensor position or using conventional beamforming.
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