Precise algorithm for surface errors of reflector antennas and analysis of its electrical performance

A novel precise algorithm for surface errors is submitted, which can be used to accurately evaluate the normal, radial and axial deviations of distorted surface. The corresponding formulae were also deduced. The correctness of the new method with its simulation values only one third of the analysis results of ANSYS software is verified by analyzing the surface errors of a 7.3-m parabolic reflector antenna working under different wind speeds and elevations in experiments and comparing the simulation results of the precise algorithm and ANSYS software methods. The data and figures have demonstrated that the new precise algorithm has the ability to well analyze the surface errors and electrical performances of distorted antenna. Its application in both large space and ground antennas will greatly decrease the design cost and shorten the design period of antenna, also offer electrical designers the accurate distortion information of antenna reflectors.