采用自适应光学(AO)系统对湍流大气进行校正时，非等晕性误差的影响不可避免。基于空间谱滤波技术，围绕湍流大气角度、聚焦、角度与聚焦相耦合非等晕性问题，进行了统一建模，给出了不同情况下的理论描述公式，分析了纯角度和纯聚焦非等晕误差中不同泽尼克模式分量所占比份。针对典型AO系统工作模式，分析了不同高度大气层对非等晕性误差的贡献。实际应用时，根据应用场景，应对AO系统工作模式和信标模式做优化匹配选择。

To compensate atmospheric turbulent aberration adopting adaptive optics (AO) system, the effect of anisoplanatic error is unavoidable. With the spacial spectral filtering method, the single anisoplanatism and multiplex anisoplanatism are systemically studied, and series of general formulae are obtained. Based on these theories, the ratio of different Zernike mode component in angle or focal anisoplanatic error is analysed. Aiming at special AO system, the components of anisoplanatic error coming from different altitudinal atmosphere are studied. In practical application, the beacon and AO system run mode should be optimized according to practical intention.