A method of improving the processing precision of fss laser etching on the surface of antenna reflector

Abstract

The invention relates to a method for improving the processing precision of FSS laser etching on the surface of an antenna reflector, and belongs to the technical field of FSS processing of antenna reflectors. The method of the present invention proposes for the first time the use of the antenna reflector measured surface data to correct the design surface data for laser etching, that is, the measured surface data is converted into the same coordinate system as the design surface data for comparative analysis, and the laser is corrected according to the error. The design surface data is used for etching, so as to improve the subsequent processing accuracy of FSS laser etching on the surface of the antenna. The size accuracy and relative position accuracy of the FSS oscillator pattern on the surface of the antenna reflector manufactured by this method are better than 15 μm.

Description

technical field

[0001] The invention relates to a method for improving the laser etching processing precision of an antenna reflector surface FSS (frequency selective surface), and belongs to the technical field of antenna reflector FSS processing. Background technique

[0002] Frequency Selective Surface (FSS) refers to the distribution of periodic gaps on the surface of conductive metal or the arrangement of periodic metal patches on the medium to achieve the purpose of frequency selection, that is, a spatial filter. Three-dimensional curved surface laser etching technology is currently the most advantageous and potential frequency selective surface manufacturing method in the manufacture of antenna reflector FSS.

[0003] Satellite antenna shells are usually made of composite materials with small mass, high specific strength, good chemical stability, fatigue resistance, and impact resistance. At present, most of the composite material antenna shells are processed by one-...