Abstract:

Aiming at the ineffective panel adjustment of the large segmented reflector antenna, a method for the determination of adjustment quantity of a panel from far field pattern and quick adjusting is presented. Using the method of physical optics (PO), the relationship between the far field value and the node displacement is derived. Then the panel adjustment vector is related to far field pattern with linear equations. Singular value decomposition (SVD) is used to solve a set of adjustment quantity of panel, which will be used for quick adjusting. An experimental reflector antenna is analyzed and some related data and figures are obtained. The effectiveness of the method mentioned above is also discussed, and the results are going to be useful guide for panel adjusting of large reflector antenna efficiently and precisely.