由于自适应光学技术校正大气湍流有一定的延迟时间 ,这将降低系统的校正性能 ,主要表现为波前斜率探测的采样率不足 ,使得系统的带宽有限而不能完全补偿有一定功率谱的湍流大气。研究了两种工作方式下的线性预测方法 ,结果显示 ,如果采用线性预测方法 ,在同样的延时条件下 ,可以减小波前斜率的 MSE误差 (由延时引起 )约 30 %。 Since adaptive optics corrects atmospheric turbulence for a certain amount of delay, this will reduce the calibration performance of the system, mainly due to the insufficient sampling rate of the wavefront slope detection and the limited bandwidth of the system which can not fully compensate the turbulent atmosphere with a certain power spectrum . The linear prediction method under two operating modes is studied. The results show that the linear prediction method can reduce the MSE error (caused by the delay) of the wavefront slope by about 30% under the same delay condition.