[00122069]用于单次相关测量仪时间分辨率的精密标定方法

一种用于单次相关测量仪时间分辨率的精密标定方法,首先将分划板安装到第一相关光束或者第二相关光束中,使其垂直于光束传输方向;然后通过角度尺测量相关光束的夹角;最后通过光电探测器检测分划板在相关信号上的投影,并计算得到时间分辨率。本发明方法对于标定脉冲的脉宽不敏感,能够在标定脉冲的脉宽接近或大于自相关仪、顶部变化平缓导致相关信号的脉冲峰值辨认困难的情况下得到具有较小误差、较高准确性的时间分辨率。 | Disclosed is a precise calibrating method used for the time resolution of a single correlation measuring instrument. The precise calibrating method comprises the steps that firstly, a reticle is installed into a first correlation light beam or a second correlation light beam, and the reticle is perpendicular to the light beam transmission direction; then, an angle ruler is used for measuring the included angle of the correlation light beams; finally, a photoelectric detector is used for detecting the projection, on a correlation signal, of the reticle and the time resolution is obtained through calculation. The precise calibrating method is insensitive to the pulse width of a calibrating pulse and can be used for obtaining the low-error and high-accuracy time resolution under the condition that when the pulse width of the calibrating pulse is close to or larger than that of an autocorrelator, the pulse peak of a correlation signal is difficult to distinguish due to the fact that the top changes slowly。