Unequally spaced array optimization based on genetic algorithm
In the case of a certain number of array elements,for the compatibility problem of spatial gain and non-grating lobe existing in high-frequency signal processing of unequally spaced towed linear array,an optimization method of unequally spaced towed linear array based on genetic algorithm was proposed.The constraint factor was taken via minimum maximum side-lobe level under the frequency band interaction,and the global optimal solution by simulating the natural evolution process of biology was searched,then the optimized position of the array element was obtained.Under the condition that the gain of the low-frequency signal processing array remains unchanged,the optimized array could achieve high-gain,no grating lobe detection for high-frequency signals.The results of computer simulation show that,compared with the original array,in high-frequency signal processing,the optimized array has no grating lobes,and the spatial gain is similar to the theoretical value,in the low-frequency signal processing,the optimized array has the same array gain.That provides an idea for unequally spaced towed linear arrays optimization and application.
Unequally spaced towed linear arraysFormation optimizationSpatial gainGrating lobes
NETL
NSTL
万方数据
维普
