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Angle of arrival estimation of a low-altitude target over the sea surface is a difficult problem due to the multipath coherent interference from the image target. We present a new monopulse technique utilizing an iterative interference cancellation algorithm based on the array antenna structure to overcome performance degradation. Our algorithm is compared with the maximum likelihood estimator, as...
In low angle tracking, signal reflection from sea surface leads to severe errors in the target angle of arrival (AOA) estimation owing to the presence of both a target and its image in the mainlobe. In this paper, we propose a new scheme that iteratively suppresses the specular reflected signal to alleviate estimation errors. The iterative processing, which includes estimating the target angle, calculating...
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