太赫兹科学与电子信息学报2017，Vol.15Issue(2)：172-177,182,7.DOI:10.11805/TKYDA201702.0172
星载太赫兹雷达碎片预警技术
Space based terahertz radar for debris approach warning
摘要
Abstract
Due to the long decay period, space debris in Geosynchronous Earth Orbit(GEO) continue to accumulate, and threaten the safety of spacecraft, especially the dangerous debris which cannot be observed from ground based instruments. According to the distribution and motion characteristics of debris, a space based terahertz radar for debris approach warning is studied. Radar Cross Section(RCS), wavelength, detection range and working process of the radar system are studied. Design and simulation results are presented. The radar carried by a geosynchronous earth orbit satellite utilizes an active phased array of the size 250 mm×250 mm,with working frequency of 140 GHz and average power consumption of 190 W. The radar can search and track debris of diameter 6.8 mm-15 cm in the cone of azimuth±15°, pitching±15°, and the range of 1.95-24.12 km, and can warn the spacecraft at least 4-35 s before the collision happens.关键词
地球同步轨道/星载雷达/危险空间碎片/太赫兹/搜索/跟踪/预警Key words
Geosynchronous Earth Orbit/space based radar/dangerous debris/terahertz/searching/tracking/warning分类
信息技术与安全科学引用本文复制引用
国爱燕,高文军,徐明明,周傲松..星载太赫兹雷达碎片预警技术[J].太赫兹科学与电子信息学报,2017,15(2):172-177,182,7.基金项目
装备预先研究基金资助项目(9140A21080213HT05313) （9140A21080213HT05313）
