CAJ | 학술논문

稀疏优化后的同心圆阵的旁瓣电平虽然相比于满阵有所降低，但还是很高。为了获得具有更低旁瓣电平的同心圆阵，本文采用锥型波束形成技术，对利用模拟退火粒子群算法得到的稀疏同心圆阵加窗，优化阵列馈电电流的激励振幅。利用改进的三角窗、汉宁窗和布莱克曼窗三种窗函数对稀疏同心圆阵进行优化。仿真结果表明，加窗后，稀疏同心圆阵的旁瓣电平都有明显降低，采用布莱克曼窗得到的阵列的最大旁瓣电平最小，汉宁窗的次之，三角窗的最大。
희소우화후적동심원진적방판전평수연상비우만진유소강저，단환시흔고。위료획득구유경저방판전평적동심원진，본문채용추형파속형성기술，대이용모의퇴화입자군산법득도적희소동심원진가창，우화진렬궤전전류적격려진폭。이용개진적삼각창、한저창화포래극만창삼충창함수대희소동심원진진행우화。방진결과표명，가창후，희소동심원진적방판전평도유명현강저，채용포래극만창득도적진렬적최대방판전평최소，한저창적차지，삼각창적최대。
Compared with the sidelobe level of the full array, the sidelobe level of thinned concentric ring array has been reduced. However, the sidelobe level of thinned concentric ring array is still high. The problem of high sidelobe can be solved through the tapered beam forming techniques in which thinned concentric ring array feeding currents are tapered in amplitudes. The modified windows such as Triangular, Hanning and Blackman can be applied to the array. Results demonstrate that a sidelobe reduction is showed in three cases. The maximum sidelobe level of the array using Blackman is the lowest , and that of the array using Triangular is the highest.