Research On Beamforming Algorithm Based On Accurate Response Control

Array signal processing is an important branch of signal processing,which is widely used in radar,communication and other fields,as well as unmanned,Internet of things and other directions.Array pattern synthesis is an important research direction in array processing.It is a signal processing technology which uses sensor array to transmit and receive signals in orientation.The design and synthesis of pattern plays an important role in the high performance of array system.in practical applications,the array pattern needs to be controlled pertinently in different scenarios.In daily life and engineering application,it is a practical and economic method to arrange the antenna array sparsely.Because the antenna array is sparsely arranged in the fixed array aperture range,the beam width of array pattern is basically unchanged at this time,and the mutual coupling between the array elements is weakened.These advantages make the sparsely distributed antenna array in radar,electronic countermeasure,sonar,wireless communication and radio days Literature has a wide range of applications.In pattern synthesis,the desired pattern is achieved by optimizing the position,excitation and phase of antenna elements.Antenna synthesis is the inverse problem of antenna analysis.In this paper,we summarize some conventional methods of array pattern synthesis and develop some new methods around sparse array.We combine the conventional methods with the latest methods and further improve the latest methods.The main work of this paper is as follows: As follows:This paper firstly introduces the basic concept and principle of planar Array,including rectangular grid planar Array,concentric ring Array and conformal Array of the basic concept and principle of Array pattern,followed by the method of precise Array Response Control(A2RC)is Improved,an Improved precise Array Response Control method(IA2RC),Combined particle swarm optimization(PSO)and simulated annealing algorithm(SA)are applied to the optimization of the direction map of small sparse linear arrays and small sparse wiring arrays.In this paper,an improved accurate array response control method(IA2RC)is proposed based on the exact array response control method(A2RC).The proposed method is applied iteratively to realize the fast synthesis of the directional graphs.This method breaks through the traditional framework of overall design of direction graph,and USES the concept of single point precise control to realize the synthesis of direction graph.This paper also studied based on particle swarm optimization(PSO)and improved precision array response control method(IA2RC)combined particle swarm precise algorithm(PSO-IA2RC)array response control method,in the original particle swarm optimization(PSO)to optimize sidelobe on the basis of further optimization,in ensuring informs precision while the sidelobe of substantially reduced,and the different aperture count each column simulation and verification.Finally,the paper also studied based on simulated annealing algorithm(SA)and improve the precise array response control method(IA2RC)accurate array response control method of simulated annealing algorithm(SA-IA2RC),simulated annealing algorithm(SA)in the original sidelobe on the basis of further optimization,optimization in guarantee informs precision at the same time makes the sidelobe further reduced.The simulation and verification of the algorithm under different aperture are carried out.Experimental results show that the improved algorithm is accurate and practical.