为测量超短单脉冲激光的时间波形以及对比度信息，基于三阶强度相关原理，结合光脉冲复制技术，提出了基于脉冲复制的测量方法。对测量原理进行了详尽的理论分析。利用分步傅里叶和龙格库塔数值计算方法对测量方案做了模拟验证。基于脉冲复制的测量法能同时进行多窗口测量。通过拼接测量时间窗口，可以有效解决测量分辨率与测量时间窗口不能兼顾的问题，同时实现大时间窗口和高分辨率测量。通过将主脉冲与预脉冲分离到不同的测量窗口，避免了梯度衰减片的使用，且具有高对比度测量能力。

For the measurement of the time profile and the contrast information of the ultrashort laser pulse, based on the third-order intensity correlation principle, using optical pulse replication, a measurement method is proposed. Theoretical analysis is made about the measurement method. The simulation was done with split-step Fourier and Runge-Kutta methods. By measuring the pulse with pieces of windows and piecing the windows together, the measuring range can be enlarged. Thus a high resolution and large window measurement is achieved.The pre-pulse and main pulse are separated into different windows to avoid the use of gradient attenuator, and provides high-contrast measurement capability.