RATAN-600射电望远镜聚焦光学优化

2009 IEEE International Conference on Microwaves, Communications, Antennas and Electronics Systems Pub Date : 2009-11-01 DOI:10.1109/COMCAS.2009.5385993

V. Khaikin, M. Lebedev, E. Majorova, A. Boag, C. Letrou

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引用次数: 1

摘要

给出了RATAN-600射电望远镜聚焦光学系统的仿真结果。结果表明，由于次反射镜形状不理想，低海拔总能量损失为10%÷15%，高海拔总能量损失为2÷4%。提出了一种聚焦光学优化的新方法，可以补偿高达80%的由副镜非最佳形状引起的能量损失。通过大量的仿真验证了所提出的解决方案。这些模拟采用几何光学近似(GO)，辅以投影孔径(PA)和物理光学(PO)方法计算近场和远场，从而考虑了有限波长效应。

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Optimization of focusing optics of RATAN-600 radio telescope

Results of simulations of RATAN-600 radio telescope focusing optics are given. It is shown that due to suboptimal shape of the secondary mirror, the total energy loss amounts to 10%÷15% at low elevations and 2÷4% at high elevations. New ways of focusing optics optimization, which allow to compensate for up to 80% of the energy loss caused by the non-optimal shape of the secondary mirror, are proposed. The proposed solutions were verified by extensive simulations. These simulations used geometrical optics approximation (GO), supplemented by the calculation of the near and the far field with Projected Aperture (PA) and Physical Optics (PO) methods, thus taking the finite wavelength effects into account.

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2009 IEEE International Conference on Microwaves, Communications, Antennas and Electronics Systems

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