以测量球和短柱的目标强度为例 ,本文根据主动声纳方程数值模拟研究在测量水下目标的目标强度实验中应当满足的平面波入射、稳态和散射远场条件。讨论了满足基本远场条件存在的测试误差和平面波条件 ;除了单“亮点”回波外 ,根据回波形成机理 ,提出多“亮点”回波情况下建立稳态散射入射波脉冲的宽度必须大于窄脉冲回波的扩展宽度。 Taking the target intensity of the sphere and the short column as an example, this paper studies the plane wave incident, steady-state and scattering far-field conditions that should be satisfied in the target intensity experiment of measuring the underwater target according to the active sonar equation numerical simulation. In addition to single “bright spot” echoes, according to the formation mechanism of echoes, it is proposed that the width of the steady-state scattered echoes should be greater than the width of the “bright spot” echoes Narrow pulse echo expansion width.