Phased-array antenna array element calibration and directional diagram recording method

The invention provides a phased-array antenna array element calibration and directional diagram recording method. The method comprises the following steps of acquiring a vertical interval corresponding to a near-field non-oscillation area of an antenna, determining a two-dimensional test surface and a double one-dimensional test surface according to an area corresponding to the specified truncation level, and determining grids for dividing the double one-dimensional test surface, calculating to obtain a virtual two-dimensional electric field vector, calculating to obtain a two-dimensional error, calculating an equivalent two-dimensional near field, carrying out calibration to obtain a calibrated compensation calibration code, and after the compensation calibration code is added, measuring the amplitude and phase distribution of all the array elements in the antenna again by using the method, and completing recording of all the array element directional diagrams. The two-dimensional test surface corresponding