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作 者:米泽辉 郭肃丽[1] 秦固平 王明杰 MI Zehui;GUO Suli;QIN Guping;WANG Mingjie(The 54th Research Institute of China Electronics Technology Corporation,Shijiazhuang 050081,China;No.31585 Troops of PLA,Beijing 100144,China)
机构地区:[1]中国电子科技集团公司第54研究所,石家庄050081 [2]中国人民解放军31585部队,北京100144
出 处:《计算机测量与控制》2024年第1期237-244,250,共9页Computer Measurement &Control
摘 要:对于大型阵列天线应用于空域抗干扰系统中,为了降低硬件成本和减少计算复杂度,一般通过子阵划分技术将整个阵列划分为若干子阵,子阵内部采用模拟波束形成,子阵间采用数字自适应波束形成;由于均匀划分方法的波束形成方向图中存在栅零点,提出一种基于蚁群算法的非均匀子阵划分技术,将阵列最大输出信干噪比作为适应度函数,应用了概率计算与轮盘赌相结合的路径规划方法;结合信息素初始浓度和启发式信息范围,设计了新的适应度函数值与信息素更新的转换关系;最后对所提算法进行仿真,结果表明在不同规模、不同输入干噪比、不同期望信号扫描角度下,所提算法在输出信干噪比上优于均匀划分方法,且没有栅零点产生,与全阵元的自适应波束形成方向图、输出信干噪比相近,验证了该方法的有效性。For large-scale array antennas in airspace anti-interference systems,in order to reduce hardware cost and reduce calculation complexity,an entire array is generally divided into several sub-array by sub-array division technology,the analog beamforming is generated in the sub-array,and the digital adaptive beamforming between sub-arrays;Because there are grating nulls in the beamforming pattern of the uniform partition method,a non-uniform sub-array partition technology based on ant colony algorithm is proposed.The maximum output signal-to-interference-noise ratio of the array is taken as the fitness function,which applies the path planning method combining the probability calculation with roulette wheel;By combining the initial concentration of pheromone and heuristic information range,a new transformation relationship between fitness function value and pheromone update is designed;Finally,The proposed algorithm is simulated,the results show that the proposed algorithm is superior to the uniform partition method in the output signal-to-noise ratio at different scales,different input interference-to-noise ratios and different desired signal scanning angles,and there is no grid zero,which is similar to the adaptive beamforming pattern of the whole array element and the output signal-to-interference-noise ratio,and it verifies the effectiveness of the proposed method.
关 键 词:子阵划分 蚁群算法 自适应波束形成 无人机测控 智能算法
分 类 号:TN957.2[电子电信—信号与信息处理]
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