Active phased array radar antenna subarray division method

Abstract

The invention discloses an active phased array radar antenna subarray division method. The method includes the steps of firstly, acquiring an array element distribution form, an array element distance and an array element number, and calculating a coordinate vector; secondly, acquiring a weighted vector; thirdly, calculating the weighted vector through a genetic algorithm to obtain an initialization clustering center; fourthly, performing clustering division on the initialization clustering center to obtain an active phased array radar antenna subarray division form, and calculating the fitness evaluation function of the active phased array radar antenna subarray division form; fifthly, presetting a threshold, and judging whether the fitness evaluation function exceeds the threshold or not; if not, terminating. The active phased array radar antenna subarray division method has the advantages that the method fuses the genetic algorithm and a fuzzy C-means clustering algorithm, the advantages of the two algorithms brought into full play, and a genetic clustering algorithm is provided.

Description

technical field [0001] The invention relates to the technical field of radar, in particular to a method for dividing active phased array radar antenna sub-arrays. Background technique [0002] In order to expand the instantaneous bandwidth of the phased array antenna system, enhance the anti-jamming capability of the radar system, and meet the increasing demand for radar system performance, while considering the constraints of radar system volume, cost, and engineering feasibility, the large-scale active phase In the control array antenna, the sub-array division technology is usually used to optimally divide the antenna array, that is, a sub-array is formed by several radiating elements first, and in the sub-array, a phase shifter is still used to control the phase wavefront of the sub-array. A variable time delay is connected behind each sub-array, and then a full array is formed by several sub-arrays, and the scanning of the array factor is realized by controlling a freque...

AI Technical Summary

Problems solved by technology

[0003] Regarding the solution to the optimal sub-array division, the existing methods do not take into account the actual engineering constraints such as the RF feed network, T / R component structure, power supply and wave control network layout, and some sub-array division results are difficult to engineer. achievable or even unattainable

At the same time, most of the research on subarray division is based on the single function of the radar (sidelobe level or signal-to-interference-noise ratio), but in practical applications, the antenna needs to meet the multi-function requirements at the same time.

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