一种可实现雷达隐身的微小卫星外形设计(英文)

A Shape Design Scheme for Radar-Stealth Minisatellite

实现对雷达的隐身是卫星隐身技术的重要研究内容。有效的隐身外形对卫星雷达隐身性能的贡献可达70%,是实现卫星雷达隐身最直接、有效的手段。对可实现雷达隐身的微小卫星外形设计进行探索性研究。首先在假定的卫星外形设计约束条件下,提出一种隐身结构外形设计。然后根据电磁场散射理论,以高频散射计算方法为基础,对具有该外形的卫星RCS进行理论预估。进一步制作全金属外形、全尺寸卫星模型,在微波暗室利用频域测量方法,对理论预估结果进行了验证,说明了该卫星隐身外形设计的有效性。

To make the satellite stealthy to radar is an important aspect of the satellite stealth technique. Because the contribution of an effective stealth shape to the radar-stealth performance of a satellite reaches 70% , stealth shape design is one of the most effective ways to realize the radar stealth satellite. In this paper, the shape design considered is for a radar- stealth minisatellite. Under the constraint of shape design for the minisatellite, a shape design scheme is firstly presented. Then, the Radar cross section （RCS） of the satellite with the proposed shape is predicted by using the high-frequency RCS computational methods on the basis of electromagnetic scattering theory. The predicted result shows that the proposed shape design can meet the stealth requirements for the minisatellite. And also a real-size metal model of the satellite is made and the practical RCS test is performed in a microwave anechoic chamber. The tested RCS of the minisatellite is consistent with the theoretical prediction, thus verifying the RCS prediction method and demonstrating the effectiveness of the proposed shape design for a radar-stealth minisatellite.