| 返回舱再入段雷达散射特性研究 |
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| 引用本文： | 朱方,吕琼之.返回舱再入段雷达散射特性研究[J].现代雷达,2008,30(5):14-16. |
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| 作者姓名： | 朱方 吕琼之 |
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| 作者单位： | 西安卫星测控中心,陕西,渭南,714000 |
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| 摘 要： | "神舟"飞船返回舱在再入过程中,由于产生等离子体鞘套和尾流,其雷达散射截面(RCS)出现剧烈变化,对地面测量雷达的跟踪产生影响。文中以C波段雷达的实测数据为依据,对返回舱RCS突增和缩减的机理进行了分析;重点阐述了厘米波雷达以反射式跟踪方式跟踪再入体时,会出现短时间目标丢失现象的必然性。
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| 关 键 词： | 再入返回舱 等离子体鞘 等离子体尾流 雷达隐身 雷达散射截面 |
| 修稿时间： | 2008年1月12日 |
A Study on Radar Scattering Characteristics of the Reentry Capsule |
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| ZHU Fang,LV Qiong-zhi.A Study on Radar Scattering Characteristics of the Reentry Capsule[J].Modern Radar,2008,30(5):14-16. |
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| Authors: | ZHU Fang LV Qiong-zhi |
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| Abstract: | During the reentering process,the RCS of the reentry capsule of Shenzhou spacecraft changed violently because of plasma sheath and wake.The change in turn affected the ground-based telemetry radar.Based on the actual measured data of C- band radar,this article analyzed the mechanism of the sudden increase and reduction of RCS of the reentry capsule and demonstra- ted the inevitability of temporary target loss during the reflective tracking of reentry capsule of the centimeter wave radar. |
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| Keywords: | reentry capsule plasma sheath plasma wake radar stealth radar cross section(RCS) |
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