金属目标原子晶格结构对其量子雷达散射截面的影响  

Impact of metal target's atom lattice structure on its quantum radar cross-section

作　　者：徐世龙[1,2] 胡以华[1,2] 赵楠翔[1,2] 王阳阳[1,2] 李乐[1,2] 郭力仁 

机构地区：[1]脉冲功率激光技术国家重点实验室(电子工程学院),合肥230037 [2]电子制约技术安徽省重点实验室,合肥230037

出　　处：《物理学报》2015年第15期140-145,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:61271353)资助的课题~~

摘　　要：量子雷达散射截面是描述光量子态照射下目标可见性的重要参数.本文对量子雷达散射截面的推导进行了扩展,使其可以应用于非平面凸目标的QRCS计算.针对面心立方、体心立方以及密排六方三种金属原子晶格所构成的目标的量子雷达散射截面进行了计算,结果表明不同的原子排列方式下,目标QRCS主瓣基本不变,而量子旁瓣在原子排列稀疏的目标中更为明显.With the development of quantum radar technology, the interaction of photons and targets has gradually become a new hotspot. Quantum radar cross section（QRCS） is an important parameter fon describing the visibility of the target illuminated by light quantum.According to the conservation of energy and the finite element method, the expression of QRCS derived by Marco Lanzagorta is extended, which can be applied to QRCS calculations of non-planar convex targets. As the surface elements of the target have different incident and scattering angles, the integral equation can give a higher calculation accuracy and is suitable for bistatic or multistatic situations.The distribution pattern of the target＇s atoms is varied. Using the interatomic distance as the only parameter to describe the atomic distribution is inaccurate. In this paper the metal atomic lattice is considered. Simulation of the QRCS that is composed of three kinds of metal atomic lattices（face-centered cubic, body-centered cubic and hexagonal close-packed lattices） with different atomic distributions has been made. The hexagonal close-packed lattice with asymmetrical distribution for different azimuth angles is discussed. Simulation result shows that with different arrangement of atoms, the main lobe of the target QRCS is basically unchanged, while the quantum side-lobes of the target with sparsely arranged atoms are much more significant. This reveals a different characteristic of QRCS, and provides theoretic basis for quantum radar and stealth technique researches.

关 键 词：量子雷达 散射截面 原子分布 目标探测 

分 类 号：O431.2[机械工程—光学工程]