Non Uniform Sub-array Partitioning Technology Based on Ant Colony Optimization Algorithm
For large-scale array antennas in airspace anti-interference systems,in order to reduce hardware cost and reduce calcu-lation 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 beam-forming pattern of the uniform partition method,a non-uniform sub-array partition technology based on ant colony algorithm is pro-posed.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;Fi-nally,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 sig-nal-to-interference-noise ratio,and it verifies the effectiveness of the proposed method.
sub-array partitionant colony algorithmadaptive beamformingUAV measurement and controlIntelligent algo-rithm
万方数据
维普
