Adaptive beamforming for low-angle target tracking under multipath interference

Author

Dongmin Park ; Eunjung Yang ; Soyeon Ahn ; Joohwan Chun

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol. (KAIST), Daejeon, South Korea

Volume

50

Issue

4

fYear

2014

fDate

Oct-14

Firstpage

2564

Lastpage

2577

Abstract

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 well as with the existing algorithm employing the specular reflected error finding function.

Keywords

antenna arrays; array signal processing; direction-of-arrival estimation; interference suppression; iterative methods; maximum likelihood estimation; target tracking; adaptive beamforming; angle of arrival estimation; array antenna structure; image target; iterative interference cancellation algorithm; low-altitude target; maximum likelihood estimator; monopulse technique; multipath coherent interference; specular reflected error finding function; Estimation; Interference; Mathematical model; Radar; Sea surface; Surface waves;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/TAES.2014.130185

Filename

6978862