Radar and infrared compatible stealth antenna shell optimization method

Abstract

The invention provides a radar and infrared compatible stealth antenna shell optimization method, and belongs to the field of antenna shell optimization, a stealth antenna shell comprises two layers of dielectric substrates, the upper and lower surfaces of each layer of dielectric substrate are coated with copper metal patches, and the optimization method comprises the following steps: selecting optimization variables; constructing an objective function of the optimization problem, and giving constraint conditions; a genetic algorithm is used as an optimizer, metal structure parameters are optimized, and the infrared duty ratio is increased while the characteristics of a microwave frequency band are guaranteed; and the metal duty ratio is increased through different responses of different frequency bands to the structure size. According to the relation between the infrared emissivity and the metal filling proportion, double-target optimization is achieved according to the set optimization target; according to the optimization target, under the condition that the frequency selection characteristic of the microwave frequency band is kept unchanged as much as possible, metal patches are randomly added to reduce the infrared emissivity, and microwave and infrared compatibility is achieved through the optimization target; the infrared emissivity is reduced by increasing the duty cycle of the metal.

Description

technical field [0001] The invention belongs to the technical field of radome, and in particular relates to a radar infrared compatible stealth radome optimization method. Background technique [0002] A radome is a structure that protects the antenna system from the influence of the external environment. It has good mechanical properties and can resist various harsh environments so as to protect the normal operation of the antenna. In terms of electromagnetic performance, it has good wave-transmitting properties and reduces the impact on the transmission of electromagnetic waves. The radome is an important part of electromagnetic protection. [0003] The origin of low RCS radome can be traced back to the 1950s. Russia was the first to realize low RCS radome through plasma to reduce the probability of being detected. In the 90s, Russia achieved more than 90% of the reduced RCS radome. Our research on this aspect started relatively late. Since the 1990s, due to various mili...

AI Technical Summary

Problems solved by technology

At present, various detectors working in different frequency bands and with different working principles are combined for detection. The stealth technology of a single frequency band can no longer meet the needs of the battlefield. Multi-band compatible stealth has become a research hotspot.

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