Form-given mesh antenna pretension calculation method

The invention discloses a form-given mesh antenna pretension calculation method. The method is used for calculating net unit pretension of a spatial form-given mesh antenna unfolded structure or a spatial form-given mesh antenna folded structure and comprises the steps that the right-hand rule is utilized to establish an x-y-z-axis space rectangular coordinate system with the center of a truss being a benchmark, the axial direction of the truss being a z axis and the radial direction of the truss being an x axis, and net pretension of a middle cable net is calculated according to preset average pretension; according to the net pretension of the middle cable net, net pretension of an upper cable net is calculated; and according to the net pretension of the middle cable net and the net pretension of the upper cable net, net pretension of a lower cable net is calculated. According to the method, through tension calculation on the three-layer form-given mesh antenna, different areas of anelectromagnetic wave refl