摘要
大型射电望远镜阵列由数个规模相同的综合孔径阵组成,其中每个综合孔径阵由数百面对数周期天线构成。该阵列将对宇宙信号进行长期的探测,整个阵列能否稳定工作,取决于阵元天线(单面对数周期天线作为阵列单元)长时间稳定指向特定仰角的能力。经过对阵元及阵列整体结构的多方案比较,给出了合理的结构方案和施工方案。阵列运行结果表明,该设计成本低廉,工作可靠,具有很好的效果。
A large radio telescope array antenna is made up of several same sized synthetic-aperture arrays. Each synthetic-aperture array is composed of hundreds of LPDA（ log-periodic dipole antenna）. The Array will be used to detect cosmos message for long time. Whether the whole array can work stably is decided by cell antenna ability of pointing to the specific elevation for a long time stably. Several designs for cell antenna and the whole array are compared in this paper,then suitable solutions of LPDA manufacture and the array installation are given. Application results prove it is a cheap and reliable design.
出处
《电子机械工程》
2006年第1期23-26,共4页
Electro-Mechanical Engineering
