Radio Holographic Metrology with Best-Fit Panel Model of the Nobeyama 45-m Telescope

• DEGUCHI H.

  Mitsubishi Electric Corporation

• Masuda Masanori

  Mitsubishi Electric Corporation

• Ebisui Takashi

  Mitsubishi Electric Corporation

• Shimawaki Yutaka

  Mitsubishi Electric Corporation

• Ukita Nobuharu

  Nobeyama Radio Observatory, National Astronomical Observatory (NAO)

• Shibata KatsunoriM.

  Nobeyama Radio Observatory, National Astronomical Observatory(NAO) Mizusawa Astrogeodynamics Observatory, NAO

• Ishiguro Masato

  Nobeyama Radio Observatory, National Astronomical Observatory

抄録

A best-fit panel model in the radio holographic metrology taking into account locations and sizes of actual surface panels in a large reflector antenna is presented. A displacement and tilt of each panel can be estimated by introducing the best-fit panel model. It was confirmed by simulations that the distinction can be drawn between a continuous surface error and a discontinuous one. Errors due to truncation of the radiation pattern were calculated by simulations. It was found that a measurement of a 128×128 map is optimum for the 45-m telescope. The reliability of the measurements using this model was examined by experiments with panel displacements. Panel adjustments using the best-fit panel model successfully improved the surface accuracy of the antenna from 138μm rms to 84μm rms (ε / D=2×10^<-6>).

収録刊行物

• IEICE Trans. Commun.

  IEICE Trans. Commun. 76 (12), 1492-1499, 1993

  一般社団法人電子情報通信学会

詳細情報

• CRID: 1572824502324713088
• NII論文ID: 110003216893
• NII書誌ID: AA10826261
• ISSN: 09168516
• 本文言語コード: en
• データソース種別:
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