传统隐形技术通过在物体表面覆盖电磁波吸收材料减小物体在特定方向的散射来实现物体的单向隐形，这种技术对多站雷达失效。基于坐标变换的隐身衣技术通过完美匹配绕行探测波来实现物体的全向隐形，但所用材料电磁参数复杂而难以应用。本项目拟基于申请人的前期研究成果，利用人工电磁材料色散精确可控原理，研究构造具有与自由空间相同电磁响应的全极化、全向自隐形“粒子”及其构成的自隐形固态电磁真空材料的机理和方法，物理实现微波频段的金属-介质复合自隐形材料及全介质自隐形材料实验样品，并对其电磁特性展开相关的实验研究。这种全极化、全向自隐形的固态电磁真空材料除了可直接用作完美雷达天线罩外，还可以用来建造各种隐形武器、飞行器、军事建筑等，具有重要的科学研究意义及工程应用价值。

Traditional stealth technology makes the object invisible in a specific direction by coating absorptive material to reduce its reflection in this specific direction, and thus be out of operation for multistation radars. The optical transformation cloak bends the impinging electromagnetic waves around a specific region and makes the object inside the region invisible in all directions, using inhomogeneous material with extremely complicate constitutive parameters, and thus far from the practical engineering application. In this project, based on this applicant's previous research, the specific theory and method for the realization of polarization and incident-angle independent invisible material in free space will be studied, for physically achieving metal- dielectric composite and all- dielectric invisible material samples in microwave and investigating their electromagnetic properties. These polarization and incident-angle independent invisible solid materials can be used not only as perfect radomes, but also to construct invisible weapon, aircraft, and architecture, and so on. These make this research have significant values in scientific research and important application values for practical engineering.