高斯白噪声环境下电磁辐射测量修正

噪声对电磁辐射准确测量影响较大，特别是对一些弱信号电磁辐射测量，噪声影响不容忽视，需要对测量结果进行修正。目前传统修正办法是合理设置频谱分析仪参数，但不同频谱分析仪，参数设置会存在差别，这种方法通用性不强，而且对电磁辐射测量结果精确度提高不明显。对此，本文研究了频谱分析仪基底噪声及测量环境中噪声的特征，提出了基于高斯白噪声的修正方法，并通过实验进行分析验证。该方法能为电磁辐射准确测量与评估提供新的思路。

Correction of electromagnetic radiation measurement in Gaussian white noise environment

The presence of noise has a great impact on the accurate measurement of electromagnetic radiation. The influence of noise cannot be ignored especially for the measurement of electromagnetic radiation of some weak signals. At present, the way to correct the electromagnetic radiation measurement results is to reasonably set the parameters of the spectrum analyzer, which is not universal because there exist differences in parameters setting for different spectrum analyzers. In this paper, by studying the characteristics of the base noise of the spectrum analyzer and the noise in the measurement environment, a suitable noise model is built and its rationality is proved through experiments. This method can provide a new way for the assessment and measurement of electromagnetic field exposure.