| Performance Analysis of Spatial Adaptive Null Pattern Control Algorithm for 5 Elements Array Antenna |
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Seung-Gwan Ahn, Sang-Jeong Lee |
1
2Chungnam National University |
| 5소자 배열안테나의 공간 적응 널패턴 제어 알고리즘 성능분석 |
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안승관, 이상정 |
1국방과학연구소
2충남대학교 |
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| Abstract |
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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. |
| Key Words:
GNSS, Adaptive Array antenna, Beam Pattern Control, OPM(Output Power Minimization) |
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