NDLI: Low angle tracking using iterative multipath cancellation in sea surface environment

Content Provider	IEEE Xplore Digital Library
Author	Soyeon Ahn Eunjung Yang Joohwan Chun Jungtai Kim
Copyright Year	2010
Description	Author affiliation: Scientific Computing Lab, Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, 335 Gwahangno Yuseong-gu, 305-701, Daejeon, Korea (Soyeon Ahn; Eunjung Yang; Joohwan Chun; Jungtai Kim)
Abstract	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 the reflected image angle and updating the null position in beamforming, is performed to eliminate the image signal; thus, the measured target AOA including error converges to the true value. Moreover, by exploiting phase comparison method using separate aperture, there is no need to consider the distortion of the monopulse slope caused by mainbeam nulling. Design examples are presented to explicitly ascertain the accuracy of the proposed technique in estimating the true target angle.
Starting Page	1156
Ending Page	1160
File Size	702020
Page Count	5
File Format	PDF
ISBN	9781424458110
ISSN	10975659
e-ISBN	9781424458127
DOI	10.1109/RADAR.2010.5494445
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sea surface Target tracking Optical reflection Estimation error Array signal processing Performance evaluation Signal processing Distortion measurement Sea measurements Position measurement
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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