基于天籁射电阵的空间目标探测与测向方法研究
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摘要
天籁计划射电望远镜阵列(简称天籁射电阵)具有大视场与高灵敏度的双重优势,既可以在观测时探测到尺寸较小的空间目标,也能在同一时刻探测到多个空间目标,具有较强的空间目标探测能力,因此可作为空间目标监测设备之一。以曲靖非相干散射雷达作为发射源,对天籁射电阵的空间目标探测能力进行计算。随后提出了可用于该系统的基于相位差测量法的空间目标测向方法,并研究了测向误差与测向角度之间的关系。
Tianlai radio array,which has high sensitivity and large field of view,can detect and capture multiple small space objects at the same time. It has decent capability of detecting the space objects,and can be used as one of the space object monitoring equipment. In this paper,the detection capability of Tianlai radio array is calculated when the incoherent scattering radar in Qujing city is assumed as a source of transmission. Then a method for direction-finding of space objects is proposed,which is based on phase difference measurement. The relationship between direction-finding error and direction-finding angle of space objects is also analyzed.
Tianlai radio array,which has high sensitivity and large field of view,can detect and capture multiple small space objects at the same time. It has decent capability of detecting the space objects,and can be used as one of the space object monitoring equipment. In this paper,the detection capability of Tianlai radio array is calculated when the incoherent scattering radar in Qujing city is assumed as a source of transmission. Then a method for direction-finding of space objects is proposed,which is based on phase difference measurement. The relationship between direction-finding error and direction-finding angle of space objects is also analyzed.
引文
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[2]郭伟,崔海英.国外电磁篱笆建设要素分析[J].现代雷达,2010,32(2):31-34.Guo Wei,Cui Haiying.Analysis of dominant construction factors of foreign electromagnetic fences[J].Modern Radar,2010,32(2):31-34.
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[5]Montebugnoli S,Salerno E,Pupillo G,et al.A potential integrated multiwavelength radar system at the medicinaradiotelescopes[C]//Proceedings of 5th European Conference on Space Debris.2009.
[6]Montebugnoli S,Pupillo G,Salerno E,et al.The bistatic radar capabilities of the medicinaradio telescopes in space debris detection and tracking[J].Advances in Space Research,2010,45(5):676-682.
[7]金旺,张希亮,杨勇志,等.潜在的500 MHz雷达网及其应用[J].天文研究与技术,2015,12(4):443-446.Jin Wang,Zhang Xiliang,Yang Yongzhi,et al.A potential radar network working in the500MHz band and its applications[J].Astronomical Research&Technology,2015,12(4):443-446.
[8]杨振起,张永顺,骆永军.双(多)基地雷达系统[M].北京:国防工业出版社,1998:34-35.
[9]陈学雷,施浒立.天籁计划:暗能量的射电探测及平方千米阵(SKA)[J].物理,2013,42(1):2-11.Chen Xuelei,Shi Huli.The Tianlai project:radio detection of dark energy and the Square Kilometer Array[J].Physics,2013,42(1):2-11.
[10]袁孝康.相位干涉仪测向定位研究[J].上海航天,1993(3):1-7.Yuan Xiaokang.Study on dirction-finding and position with phase interferometers[J].Aerospace Shanghai,1993(3):1-7.
[11]刘成,施浒立,陈学雷.利用天籁暗能量观测阵列开展空间目标探测新技术试验[J].宇航学报,2017,38(11):1243-1252.Liu Chen,Shi Huli,Chen Xueleii.A new space target detection technology and its experiment by using Tianlaidark energy radio detection array[J].Journal of Astronautics,2017,38(11):1243-1252.