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Accurate time delay estimation based passive localization
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DOI：10.1016/j.sigpro.2009.03.009.png)
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摘要
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A conventional approach for source localization is to utilize time delay measurements of the emitted signal received at an array of sensors. The time delay information is then employed to construct a set of hyperbolic equations from which the target position can be determined. In this paper, we utilize semi-definite programming (SDP) technique to derive a passive source localization algorithm which can integrate the available a priori knowledge such as admissible target range and other cues. It is shown that the SDP method is superior to the well-known two-step weighted least squares method at lower signal-to-noise ratio conditions. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.
Keyword:
Time delay estimation
Source localization
Semi-definite programming
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3.6
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