A High Effective and High Precision Engineering Calculation Method of Angel Error Curve Measurement for Phased Array Radar

keywords:phased array radar,angel error s curve,antenna phase center,2-D linear interpolation

Abstract:The widened phased array radar beam width with the larger scanning angle , makes measurement accuracy of sun-different method is reduced, besides the data processing chip storage space resources is limitted. Therefore, this pa- per presents an effective and high precision engineering calculation method of angel error curve measurement for phased array antenna. The frequentcy value, S curve coefficient information are input, by corresponding correction processing, query pa- rameters table, to calculated amount of beam angle error, combined with the beam center point , output beam angle of the antenna Coordinate System. Then from antenna radome parameters table, through the calculation of two-dimensional linear interpolation, the radome refraction caused by angle the final output error, the modified antenna cordinates angle information are output. Simulation results of error curve slope for angle measurement fit with the results tested in anechoic chamber, which indicates the validity of the proposed method.