A Conformal Array Direction Graph Synthesis Method Based on Solution Space Clipping Particle Swarm Optimization Algorithm

Abstract

The invention discloses a conformal array pattern synthesis method based on the solution space clipping particle swarm algorithm. The method first selects the peak side lobe level index in the multi-optimization target, and designs a method based on the improved amplitude-phase projection method and fast Fourier The iterative process of leaf transformation completes the single-objective synthesis of the pattern under the constraint of the dynamic range of the array element excitation amplitude; and based on the conformal array element excitation obtained by the above iteration, the solution space of the particle swarm optimization algorithm is cut, so that the particle swarm can perform small-scale The refined search finally realizes the multi-objective synthesis of the conformal array pattern, and obtains the excitation of conformal array elements that meet multiple optimization objectives. The invention uses the low-complexity fast Fourier transform method to cut the solution space of the particle swarm algorithm, reduces the calculation amount of the algorithm, effectively avoids the local convergence problem of the particle swarm algorithm, and significantly improves the particle swarm algorithm to solve the conformal array direction graph with multiple Algorithm performance on the target synthesis problem.

Description

technical field [0001] The invention relates to the field of array antennas, in particular to a conformal array pattern synthesis method based on a solution space clipping particle swarm algorithm. Background technique [0002] In recent years, radar systems have developed rapidly, and their use scenarios have become more and more extensive. As the core part of the electromagnetic transceiver device of the radar system, the array antenna has attracted much attention. In different usage scenarios and for different usage requirements, the array antenna needs to generate specific far-field patterns. How to achieve the desired array direction by combining the excitation of the array antenna elements Figure 1 It has been a hot topic of research. In the field of engineering, there are also many limitations when implementing the pattern synthesis problem. The dynamic range (DRR) of the excitation amplitude of the array element is an important aspect, and a higher DRR will increa...

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Problems solved by technology

However, since the dimension of the particle vector is the same as the number of parameters to be optimized, when the number of parameters to be optimized is high, the dimension of the solution space is high, the convergence speed of the algorithm becomes slower, and it is easy to fall into local convergence

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