A radar-infrared compatible stealth composite material with infrared camouflage function

By designing a multi-layered radar-infrared compatible stealth composite material and optimizing the arrangement of coding units using a genetic algorithm, radar stealth and infrared camouflage are integrated, solving the problem of the salience of existing materials in complex backgrounds and achieving stealth effects in both radar and infrared bands.

CN121812957BActive Publication Date: 2026-05-26UNIV OF SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
UNIV OF SCI & TECH OF CHINA
Filing Date
2026-03-04
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing radar-infrared compatible stealth materials are difficult to achieve infrared camouflage against complex and non-uniform infrared backgrounds, and cannot effectively match complex background features, making targets easily identifiable in infrared detection.

Method used

A radar-infrared compatible stealth composite material with infrared camouflage function is designed. Through a multi-layer structure consisting of a top coding layer, a dielectric layer, and a conductive reflective layer, the arrangement of coding units is optimized using a genetic algorithm to achieve the integration of radar stealth and infrared stealth. The reflection phase difference and infrared emissivity difference between zero coding units and one coding units are used to adapt to complex backgrounds.

Benefits of technology

It achieves stealth in both radar and infrared bands, reduces radar cross section, and has an infrared radiation pattern similar to the background, overcoming the salience problem of traditional materials in complex backgrounds. The material is thin, light, and easy to manufacture.

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Abstract

This invention discloses a radar-infrared compatible stealth composite material with infrared camouflage function, belonging to the field of multi-spectrum compatible stealth technology. The radar-infrared compatible stealth composite material comprises, from top to bottom, a top coding layer, a first dielectric layer, a second dielectric layer, a conductive reflective layer, and a third dielectric layer along the electromagnetic wave propagation direction. The top coding layer includes several zero-patch large units and one-patch large units. Along the electromagnetic wave propagation direction, the zero-patch large units and one-patch large units, together with the dielectric layer and reflective layer below them, constitute zero-coding units and one-coding units, respectively. These units are arranged in an array structure according to coding patterns generated by a multi-objective optimization algorithm. This invention utilizes the arrangement of zero-coding units and one-coding units to construct an infrared camouflage pattern matching the complex background thermal radiation characteristics in the infrared band, and utilizes the reflection phase difference between the two coding units in the microwave band to achieve radar cross-section reduction, thus completing radar-infrared compatible stealth.
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