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A GPS Receiver Structure for Multi-beamforming  

Lee, Geon-Woo (Chungnam National University)
Lim, Deok-Won (Chungnam National University)
Lee, Chang-Won (ADD)
Park, Chan-Sik (Chungbuk National University)
Hwang, Dong-Hwan (Chungnam National University)
Lee, Sang-Jeong (Chungnam National University)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.12, no.2, 2009 , pp. 182-190 More about this Journal
Abstract
GPS receivers can be disrupted by intentional or unintentional jamming, then it is unable to receive GPS signals and it is impossible to get the correct navigation results. Anti-jamming schemes using array antennas are being studied well due to high performance of those, and the efforts to apply them to GPS receiver are also being done. A GPS receiver structure for a multiple beam-forming scheme among those schemes has been proposed in this paper, and the performance is also compared with that using a general GPS receiver structure. For a general GPS receiver structure, each satellite signal which is formed by a beam-forming scheme is summed to be processed in a part of digital signal processing. For a proposed GPS receiver structure, however, each satellite signal is respectively processed by a designated channel in a part of digital signal processing. Finally, it is confirmed that the proposed GPS receiver structure is superior to a general GPS receiver structure in a point of the carrier to noise power ratio and the navigation accuracy using a software platform.
Keywords
GPS; Beam-Forming; Array Antenna; Anti-Jamming; Software Platform;
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