Improved Adaptive Particle Swarm Optimization for Wide Null Steering of a Linear Phased Array antenna [ READ ]
Ghada Shaban M., H. A. Mohamed, Hanan Kamal
This work is concerned with using a methodology for eliminating the effect of unwanted interference in a certain direction applied to the radiation pattern of a linear array antenna. An efficient method based on Particle Swarm Optimization is used .The amplitude of the elements in the linear array antenna is optimized in order to achieve nulls at the positions of the interference. The proposed Improved Adaptive Particle Swarm Optimization (IAPSO) is an efficient method applied for optimization. The Dolph-Chebyshev array is used to show the success of obtaining nulls at certain identified positions where interference occurs. The results shows the efficiency of the proposed technique in achieving perfect wide nulls with depth of -75 db using 1700 iterations as the maximum number of iterations. Sensitivity and robustness of the proposed algorithm are tested at different array antenna systems with different properties which prove the effectiveness of the technique proposed in achieving the property of interference cancellation. Further, the side lobe levels and the main beam width are preserved at their original levels of the main signal without being increased.
Ghada Shaban M., H. A. Mohamed, Hanan Kamal
This work is concerned with using a methodology for eliminating the effect of unwanted interference in a certain direction applied to the radiation pattern of a linear array antenna. An efficient method based on Particle Swarm Optimization is used .The amplitude of the elements in the linear array antenna is optimized in order to achieve nulls at the positions of the interference. The proposed Improved Adaptive Particle Swarm Optimization (IAPSO) is an efficient method applied for optimization. The Dolph-Chebyshev array is used to show the success of obtaining nulls at certain identified positions where interference occurs. The results shows the efficiency of the proposed technique in achieving perfect wide nulls with depth of -75 db using 1700 iterations as the maximum number of iterations. Sensitivity and robustness of the proposed algorithm are tested at different array antenna systems with different properties which prove the effectiveness of the technique proposed in achieving the property of interference cancellation. Further, the side lobe levels and the main beam width are preserved at their original levels of the main signal without being increased.
