Reflector surface alignment based on antenna gain measurements under perturbations

Zheng Lou; Yingxi Zuo; Xiaoling Zhang; Haoran Kang; Yuan Qian

doi:10.1117/1.JATIS.5.2.024003

22 April 2019 Reflector surface alignment based on antenna gain measurements under perturbations

Zheng Lou, Yingxi Zuo, Xiaoling Zhang, Haoran Kang, Yuan Qian

Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 5, Issue 2, 024003 (April 2019). https://doi.org/10.1117/1.JATIS.5.2.024003

Abstract

We describe a method for the measurement and alignment of reflector surfaces of radio telescopes with high precision. The scheme is based on antenna gain measurements under a series of active surface perturbations in terms of a set of orthogonal basis functions. Both local and global basis functions can be employed, resulting in different spatial resolution and different requirements on signal-to-noise ratio. Both theoretical studies and numerical simulations are presented, and demonstration experiments on a 1.2-m submillimeter antenna are reported. Practical considerations, including the effects of antenna mispointing and near field operation, are also discussed.

Citation Download Citation

Zheng Lou, Yingxi Zuo, Xiaoling Zhang, Haoran Kang, and Yuan Qian "Reflector surface alignment based on antenna gain measurements under perturbations," Journal of Astronomical Telescopes, Instruments, and Systems 5(2), 024003 (22 April 2019). https://doi.org/10.1117/1.JATIS.5.2.024003

Received: 11 January 2019; Accepted: 1 April 2019; Published: 22 April 2019

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