NDLI: Satellite coverage for GPS antennas on small spinning projectiles

Content Provider	IEEE Xplore Digital Library
Author	Svendsen, A. Gupta, I.J. Chi-Chin Chen
Copyright Year	2011
Description	Author affiliation: ElectroScience Laboratory, Department of Electrical and Computer Engineering, The Ohio State University, Columbus, 43212, USA (Svendsen, A.; Gupta, I.J.; Chi-Chin Chen)
Abstract	In this paper, the satellite coverage of GPS antennas on a small, highly dynamic spinning projectile is investigated. Since the projectile has varying pitch and roll, the antenna needs to have omni-directional coverage. A patch antenna is selected as the basic element, but it by itself cannot provide the necessary coverage. To obtain the desired coverage, multiple elements are placed around the circumference of the projectile. Then, we investigate the best way to combine the responses of the elements to provide good SNR coverage. The three reception modes we study are digital beamforming, simply summing the elements together (we will call it sum mode), and choosing the element with highest SNR (we will call it diversity mode). Beamforming has the ideal performance but is costly because one needs to know the antenna manifold and satellite angle of arrival. The array mode does not need this information but leads to much lower SNR. The diversity mode also does not need this information, and recovers much of the ideal performance and has 4–10 dB minimum SNR improvement upon the sum mode. The diversity mode, therefore, may be a good choice for spinning projectiles.
Starting Page	468
Ending Page	471
File Size	1446401
Page Count	4
File Format	PDF
ISBN	9781424495627
ISSN	19471491
e-ISBN	9781424495634
DOI	10.1109/APS.2011.5996746
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal to noise ratio Projectiles Satellites Array signal processing Satellite antennas Global Positioning System Patch antennas
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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