隐身目标毫米波辐射特性研究

【作者】 缪晨；

【导师】 娄国伟；

【作者基本信息】 南京理工大学 ， 机械电子， 2004， 硕士

【摘要】 本文是国防重点科研课题：“两栖战车的毫米波辐射特征控制技术”的重要组成部分。对隐身目标的毫米波辐射特性进行了研究。 首先讨论了一般目标的毫米波辐射特性建模和测量原理。接着讨论了表征目标辐射特性的视在温度的反演算法。在完成理论准备后，利用电磁场理论建立了隐身涂层材料的天线温度模型，给出了天线温度与涂层材料的厚度、相对介电常数、相对磁导率之间的定量关系。在此模型的基础上，用神经网络迭代法从测得的天线温度反演了隐身涂层材料的的相对介电常数、相对磁导率。最后分析了3mm涂层目标对辐射计的隐身机理，提出了一种评价隐身涂料对辐射计隐身效果的方法。更多还原

【Abstract】 This paper is an important part of Native Defense scientific research fund task "the control technology for MMW radiation characters of amphibian tanks". Study the radiation characters of stealth objects.First, this paper discusses the modeling and measuring of objects’ radiation characters. Then studies the inversion algorithm of retrieving the brightness temperature. The brightness temperature denotes the objects radiation characters. After those models the radiometer antenna temperature of the coating stealth material using the theory of electromagnetic field. This model proposes the quantitative relations among the antenna temperature, material thickness, material relative permittivity and material relative permeability. Based on the model, retrieves the relative permittivity and relative permeability of the coating- material by iterative inversion of a neural network from the measured antenna temperature. At last, analysis the stealth principles to radiometer of 3mm coating stealth material and provides a method to estimate the stealth results.更多还原