The expressions of sidelobe measurement errors versus the relative parameters of antenna under test(AUT)and near-field amplitude and phase random errors are presented by using a planar near-field technique to measure ultra-low sidelobe antennas.

• 为了增强现代舰用天线系统的抗干扰能力；必须提高天线旁瓣的测量精度.；基于此给出了用平面近场技术测量超低旁瓣天线时；旁瓣测量总误差与待测天线参数、近场幅相随机误差的数学模型:在相同的测量条件下；天线旁瓣越低；旁瓣测量误差越大;