研究了在放大激光脉冲的噪声测量中，二阶相关技术和三阶相关技术的差别。理论分析显示，三阶相关技术不仅可以显示噪声脉冲的正确位置，而且具有比二阶相关技术更高的测量精度，数值计算也验证了这一点 The difference between the second-order correlation and the third-order correlation is studied in the noise measurement of the amplified laser pulse. The theoretical analysis shows that the third-order correlation technique can not only display the correct position of the noise pulse, but also has higher accuracy than the second-order correlation technique. The numerical calculation also verifies this point