Detection of ship wakes using an airborne magnetic transducer

Nan Zou; Arye Nehorai

doi:10.1109/36.823948

Detection of ship wakes using an airborne magnetic transducer

Nan Zou, Arye Nehorai

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

Wakes induced by the motion of vessels may extend for tens of kilometers and exist for hours under certain conditions in the open sea. This provides a useful feature for long-range ship detection. We present a method for passively detecting a ship wake using measurements obtained by an airborne SQUID magnetic transducer that measures the first order gradients of the magnetic signature induced by the wake. Analytical formulas for wake magnetic gradients are derived to provide guidelines for using the airborne detector. We also derive bounds on the probability of wake detection for crosscorrelation and square-law detectors, which can be used to predict the expected performance. Numerical examples are used to demonstrate the applicability of our results.

Original language	English
Pages (from-to)	532-539
Number of pages	8
Journal	IEEE Transactions on Geoscience and Remote Sensing
Volume	38
Issue number	1 II
DOIs	https://doi.org/10.1109/36.823948
State	Published - 2000

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title = "Detection of ship wakes using an airborne magnetic transducer",

abstract = "Wakes induced by the motion of vessels may extend for tens of kilometers and exist for hours under certain conditions in the open sea. This provides a useful feature for long-range ship detection. We present a method for passively detecting a ship wake using measurements obtained by an airborne SQUID magnetic transducer that measures the first order gradients of the magnetic signature induced by the wake. Analytical formulas for wake magnetic gradients are derived to provide guidelines for using the airborne detector. We also derive bounds on the probability of wake detection for crosscorrelation and square-law detectors, which can be used to predict the expected performance. Numerical examples are used to demonstrate the applicability of our results.",

author = "Nan Zou and Arye Nehorai",

note = "Funding Information: Manuscript received September 10, 1998; revised May 24, 1999. The work of A. Nehorai was supported by the Office of Air Force of Scientific Research under Grant F49620-97-1-0481, the National Science Foundation under Grant MIP-9615590, and the Office of Naval Research under Grant N00014-98-1-0542.",

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AU - Nehorai, Arye

N1 - Funding Information: Manuscript received September 10, 1998; revised May 24, 1999. The work of A. Nehorai was supported by the Office of Air Force of Scientific Research under Grant F49620-97-1-0481, the National Science Foundation under Grant MIP-9615590, and the Office of Naval Research under Grant N00014-98-1-0542.

PY - 2000

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N2 - Wakes induced by the motion of vessels may extend for tens of kilometers and exist for hours under certain conditions in the open sea. This provides a useful feature for long-range ship detection. We present a method for passively detecting a ship wake using measurements obtained by an airborne SQUID magnetic transducer that measures the first order gradients of the magnetic signature induced by the wake. Analytical formulas for wake magnetic gradients are derived to provide guidelines for using the airborne detector. We also derive bounds on the probability of wake detection for crosscorrelation and square-law detectors, which can be used to predict the expected performance. Numerical examples are used to demonstrate the applicability of our results.

AB - Wakes induced by the motion of vessels may extend for tens of kilometers and exist for hours under certain conditions in the open sea. This provides a useful feature for long-range ship detection. We present a method for passively detecting a ship wake using measurements obtained by an airborne SQUID magnetic transducer that measures the first order gradients of the magnetic signature induced by the wake. Analytical formulas for wake magnetic gradients are derived to provide guidelines for using the airborne detector. We also derive bounds on the probability of wake detection for crosscorrelation and square-law detectors, which can be used to predict the expected performance. Numerical examples are used to demonstrate the applicability of our results.

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JO - IEEE Transactions on Geoscience and Remote Sensing

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IS - 1 II

ER -

Detection of ship wakes using an airborne magnetic transducer

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