主要介绍信号平均技术和自适应滤波技术，并给出算法。
Signal averaging and adaptive filtering techniques were introduced and the algorithms were given.
运用信号平均技术之后，本课题研制的系统其测量灵敏度完全可以满足设计要求。
If signal averaging technology was used in our CO2 DIAL system, then would improved the sensitivity of measurement clearly and could meet the demand of development.
为了提高信噪比，采用了信号平均技术，并通过实验确定了最佳采样时间和平均次数。
The signal average method was used in order to increase the S/N ratio, and the optimum sweep time and average times were experimentally determined.
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