【摘要】 作者测量了常见军用涂层在Ka波段的发射率,测量对象包括:雷达隐身涂层、雷达与高发射率红外兼容隐身涂层、雷达与低发射率红外兼容隐身涂层、高发射率红外涂层以及航空防腐涂层。测量试验采用了基于电压法的改进测量方案,该测量方法可以消除材料样品不能完全覆盖天线波束以及参考体与材料样品厚度差异导致的有效辐射面积差异引起的误差。此外,文章分析并讨论了主要的测量不确定度源。更多还原

【Abstract】 Materials samples of some common military coating including radar absorbing coating,high emission infrared coating,radar absorbing and high emission infrared compatible coating,radar absorbing and low emission infrared compatible coating,and aviation anticorrosive coating are prepared and their emissivity at different observation angles in Ka band is measured in this paper. An improved measurement scheme based on voltage method is proposed and used for the measurement experiments,The measurement scheme can eliminate the errors caused by antenna sidelobe and thickness difference between sample and reference bodies. In addition,the main sources of measurement uncertainty are analyzed and discussed.更多还原