High-performance frequency selection radar cover

A frequency selection and radome technology, applied in the stealth field, can solve the problems of difficult FSS engineering, complex structure, and difficult process, and achieve the effect of small passband insertion loss, reduced process difficulty, and large process tolerance.

Active Publication Date: 2013-01-09
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0006] In order to solve the shortcomings of single-screen FSS structure design in the prior art and the disadvantages of double-sided medium-loaded FSS and double-screen FSS, which are difficul

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[0016] The present invention will be described in detail below in conjunction with the drawings.

[0017] Such as figure 2 with image 3 As shown, the high-performance frequency-selective radome used for stealth flying weapons uses a certain process to combine the first adhesive dielectric layer 4, the ultra-low dielectric constant dielectric layer 5, the second adhesive dielectric layer 6 and the flexible FSS film Layer 7 is formed according to the size of the inner surface of the original radome 3 and laminated to form the FSS liner cover, and then the FSS liner cover is conformally laminated on the inner surface of the original radar 3 by a certain process. An adhesive medium layer 4, an ultra-low dielectric constant medium layer 5, a second adhesive medium layer 6 and a flexible FSS film layer 7 are formed by one-time lamination.

[0018] FSS array design is based on specific technical indicators such as passband and stopband transmittance, bandwidth and other specific technic...

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Abstract

The invention belongs to the technical field of stealth and provides a high-performance frequency selection radar cover used for stealth of flight weapons in order to overcome the shortages of single-screen FSS (frequency selective surface) structural design in the prior art, and difficulty in achieving FSS engineering by bilateral dielectric load FSS and double-screen FSS due to complex structure and high processing difficulty. The radar cover comprises an original radar cover, a first splice dielectric layer, an ultralow dielectric constant dielectric layer, a second splice dielectric layer and a soft FSS film layer. The first splice dielectric layer, the ultralow dielectric constant dielectric layer, the second splice dielectric layer and the soft FSS film layer are molded and combined into an FSS lining from an outer layer to an inner layer, and an FSS lining layer is attached on an inner surface of the original radar cover. Due to the fact that selected cellular and foam media both belong to ultralight materials, weight of the frequency selection radar cover is not increased. The high-performance frequency selection radar cover is relatively simple in structure, process tolerance is large since design margin is large, and difficulty, cycle and cost of process are lowered.

Description

technical field [0001] The invention belongs to the field of stealth technology, and in particular relates to a high-performance frequency selection radome. Background technique [0002] The Radar Cross Section (RCS) on the surface of an object represents the radar detectability of the target. The smaller the RCS value, the less likely the target will be detected by radar. When missiles, aircraft and other weapons and equipment adopt homing radar terminal guidance to achieve precise guidance, the guidance cabin will form a random angle reflector, which becomes a strong scattering source, which greatly increases the forward RCS of the missile. Therefore, how to reduce the RCS while achieving radar guidance has become a key issue to improve the penetration capability of flying weapons. Since the cockpit glass, radome and seeker cover are all radar transparent parts, conventional radar absorbing materials generally have no transparent area. Therefore, absorbing materials canno...

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Application Information

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IPC IPC(8): H01Q1/42H01Q1/28H01P1/20
Inventor 王岩松高劲松陈新梁凤超冯晓国
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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