| In recent years,with the rapid development of communication technologies,accurate measurement of electromagnetic radiation has attracted more and more researchers’ attention,when using a spectrum analyzer to measure the base station electromagnetic radiation.The noise is inevitable,and the existence of noise to the electromagnetic radiation measurement results brings a lot of deviations,especially for some weak electromagnetic radiation measurement.In order to improve the accuracy of electromagnetic radiation measurement,the current method is to set the parameters of the spectrum analyzer.But only setting the parameters of the spectrum analyzer can not get the accurate radiation value.In view of the existing problems,the main contents and innovation of this paper are as follows:In the Gaussian white noise environment,a method is proposed using the Gaussian white noise model to calculate the electromagnetic radiation measurement correction factor.Firstly,the theoretical formula of the correction factor is deduced according to the working principle of the spectrum analyzer and the spectral density function of the Gaussian white noise power.By comparison,to verify the accuracy of the correction factor.In experiment we found that the intensity of electromagnetic radiation was 0.14 V/ m measured by the spectrum analyzer,the corrected electromagnetic radiation intensity was 0.11V/ m.In the impulse noise environment,a method is proposed using the impulse noise model as a correction factor to correct the measurement results.First,the probability of imbalance between noise sources is greatly increased according to the impulse noise environment,and the amplitude of the impulse noise is much higher than that of the Gaussian white noise.Therefore,this paper deduces the correction factor in the impulse noise environment according to the working principle of the spectrum analyzer and the impulse noise model.The experiment found that the intensity of electromagnetic radiation was 0.16 V/ m measured by the spectrum analyzer,the corrected electromagnetic radiation intensity was 0.12V/ m. |
