An improved method for processing digital signals of the Frisch-grid ionization chamber to measure the electron drift velocity is proposed, which is based on the analysis of the cathode signal and the differentiated cathode signal. This method allows the real-time measurement eliminating the influence of electron diffusion and it is suitable for working gases with electron loss from the electronegative impurities. The electron drift velocities in gas mixtures of Ar $+$ 9.86% CH₄, Ar $+$ 3.45% CO₂, (Ar $+$ 3.45% CO₂) $+$ x% O${}_2$ (x is less than 0.33), (Ar $+$ 3.45% CO₂) $+$ y% Air (y is less than 2.09) have been measured, and the results are compared with existing measurements and calculations using MAGBOLTZ-11.4 code. Meanwhile, the influences of the impurities of oxygen and nitrogen on the electron drift velocity are analyzed.

基于对阴极信号和微分阴极信号的分析，提出了一种改进的用于处理弗里施格电离室数字信号以测量电子漂移速度的方法。该方法可以进行实时测量，消除了电子扩散的影响，适用于由于负电性杂质而电子损失的工作气体。氩气混合气体中的电子漂移速度$+$9.86％CH ₄，氩气$+$3.45％CO ₂，（氩$+$3.45％CO ₂）$+$ x％O${}_{\mathrm{2个}}$ （x小于0.33），（Ar $+$3.45％CO ₂）$+$已测量y％空气（y小于2.09），并将结果与​​使用MAGBOLTZ-11.4代码的现有测量结果和计算结果进行比较。同时，分析了氧和氮杂质对电子漂移速度的影响。