Thickness Measurement System Design of Radar AbsorbingCoating in a Composite Stealth Coating
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摘要: 针对“雷达+红外”复合隐身体系的结构特点和雷达吸波涂层的磁化特性,建立了某复合隐身涂层中雷达吸波涂层的磁力测厚模型,分析了测厚算法。结果表明,当复合隐身体系中红外涂层厚度+某底漆厚度远小于空气涂层厚度时,磁力测厚法可忽略红外涂层和某底漆厚度的影响,直接利用磁力大小与雷达吸波涂层厚度成正比的电磁学特性关系,测出雷达吸波涂层的厚度。本文作者还设计了磁力测厚传感器,开展了磁力测量试验。结果表明,该磁力测厚系统结构简单、测量结果精确。Abstract: For the structural characteristics of the "radar + infrared" composite stealth system and the magnetization characteristics of the radar absorbing coating, the magnetic thickness measurement model for the radar absorbing coating in a composite stealth coating is established and the thickness measurement algorithm analyzed. It is found that when the sum of the thicknesses of the infrared coating and a certain primer in the composite stealth system is much smaller than the thickness of the air coating, the magnetic thickness measurement can ignore the influence of the thicknesses of the infrared coating and the primer, and that the thickness of the radar absorbing coating can be directly measured by using the electromagnetic characteristic relationship that the magnetic force is proportional to the thickness of the radar absorbing coating. Besides, a magnetic thickness measurement sensor is designed and the magnetic force measurement test is carried out. The results show that the magnetic thickness measurement system has a simple structure and accurate measurement results.
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