NDLI: Performance Comparison of Spherical and Elliptical Earth Models for Low Angle Tracking in Radars

Content Provider	IEEE Xplore Digital Library
Author	Ramakrishnan, S. Sarkar, Binay K.
Copyright Year	2006
Description	Author affiliation: Department of Electronics & Electrical Comm. Engineering, IIT - Kharagpur, INDIA. e-mail: ramakrishnan_lrde@yahoo.co.in (Ramakrishnan, S.) \|\| Department of Electronics & Electrical Comm. Engineering, IIT - Kharagpur, INDIA. e-mail: binaysarkar@yahoo.com (Sarkar, Binay K.)
Abstract	The problem in tracking a target at lower elevation angles by radars comes due to multipath phenomenon. Specular multipath causes erratic elevation tracking at low target elevations within a beam width of the horizon and causes significant elevation error even at target elevations a few beam widths above the horizon. In this current work, two earth models namely Spherical and Elliptical (based on WGS-84 model) for computing specular multipath effects has been proposed to compute the target elevation angle and their performances are compared. The Complex Angle (CA) is used to estimate the true target elevation angle in the presence of multipath. The result shows that the elliptical earth model gives better elevation estimation than the spherical earth model.
Starting Page	1
Ending Page	4
File Size	205735
Page Count	4
File Format	PDF
ISBN	9788372076212
DOI	10.1109/IRS.2006.4338078
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-05-24
Publisher Place	Poland
Access Restriction	Subscribed
Rights Holder	Politechnika Warszawska Institute of Electronic Systems, Warsaw University of Technology
Subject Keyword	Earth Sea surface Target tracking Receiving antennas Radar imaging Radar tracking Radar antennas Reflector antennas Optical reflection Mirrors
Content Type	Text
Resource Type	Article

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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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