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Performance Analysis of Spatial Adaptive Null Pattern Control Algorithm for 5 Elements Array Antenna  

Ahn, Seung-Gwan (ADD)
Lee, Sang-Jeong (Chungnam National University)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.13, no.2, 2010 , pp. 313-319 More about this Journal
Abstract
GNSS receiver which uses the weak satellite signal is very vulnerable to the intentional jamming or non-intentional electromagnetic interference. One of the best method to overcome this disadvantage is to use an adaptive array antenna which has the capability of beamforming or nulling to the certain direction. In this paper, the performance of spatial adaptive null pattern control algorithm of 5 element array antenna is analyzed. A control algorithm which is designed in the 5 element array antenna is OPM(Output Power Minimization) which is eliminating the correlation characteristics between a reference antenna and the others. This algorithm can be applied effectively to the satellite navigation's CRPA because the satellite direction is not considered and GNSS signal power is below the thermal noise. The feature of the OPM algorithm is analyzed and the performance is compared with other null pattern control algorithm.
Keywords
GNSS; Adaptive Array antenna; Beam Pattern Control; OPM(Output Power Minimization);
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