检测噪声 meaning in English

detection in noise

Error analysis and improvement method of concentration measurement of trace gas in the atmosphere by differential optical absorption spectroscopy
基于可调谐二极管激光吸收光谱学对二次谐波检测噪声分析研究
They also try to detect if noise ? the overexposed pixels within the image that create a grainy effect ? was present at the time the photograph was taken or has been added later
他们还试图检测噪声? ?图像中呈现粒状效果的过度曝光像素? ?是产生于照片被摄制的时刻还是后来才被加上的。
The analysis shows that by using correction function processing to the collected signals , the periodicity of the signal can be checked conveniently , the frequency - domain response of linear systems with uncertain parameters can be identified , useful signals can be checked out and extracted from the noise
由分析可知，对采集到的信号做相关函数的处理可以方便地对信号的周期性进行检测，确定未知参数的线性系统的频域响应，检测噪声中有用信号，并对噪声中的信号进行提取。