A Method of Electromagnetic Radiation Measurement and Correction Based on Impulse Noise Environment

Abstract

The invention discloses an electromagnetic radiation measurement correction method based on the pulse noise environment. The concrete steps are listed as follows: a corresponding pulse noise correction factor is calculated by using a pulse noise model according to the resolution bandwidth value set by a frequency spectrum analyzer; the actual signal power value is calculated through the correction factor and the measured signal power; and the corrected electromagnetic radiation intensity is calculated according to the obtained actual signal power value by combining the measured antenna parameters. Multiple factors of the internal noise of the frequency spectrum analyzer, the noise in the electromagnetic radiation measurement environment and the characteristics of the pulse noise model are considered, modeling of base noise prediction of the frequency spectrum analyzer is performed, and the electromagnetic radiation can be accurately measured by the established model. The method has great reference value for accurate measurement of the electromagnetic radiation, environmental protection and the physical health of people so as to have great social benefit.

Description

technical field [0001] The invention relates to a method for measuring and correcting electromagnetic radiation based on impulse noise environment. Background technique [0002] It can be known from the working principle of the spectrum analyzer that noise is ubiquitous in the measurement process, and the existence of noise brings non-negligible errors to the electromagnetic radiation measurement results. In many factories, manufacturing workshops and other places, there are often many devices working , the noise at this time presents a pulse form. In the pulse noise environment, because the amplitude of the pulse noise is much larger than the Gaussian white noise and has a tailing phenomenon, it is necessary to accurately measure the electromagnetic radiation of a certain device in the pulse noise environment. To obtain an accurate measurement result, it is necessary to find a correction method to reduce the influence of noise. [0003] For the correction method of electro...

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Problems solved by technology

[0003] For the correction method of electromagnetic radiation intensity measurement, the literature "Application Research of Spectrum Analyzer to Measure Low-level Signal" (Qin Shunyou. Application Research of Spectrum Analyzer to Measure Low-level Signal[J]. Journal of Electronic Measurement and Instrumentation, 2009, 23(s1) :51-55.) To study the method of setting appropriate parameters such as spectrum analyzer radio frequency attenuation, resolution bandwidth and video bandwidth, and to improve and improve the measurement accuracy of low-level signals, the document "Accurate Signal Power Measurement with Spectrum Analyzer" ( Chen Feng. Accurate signal power measurement with spectrum analyzer[J]. Electronic Design Application, 2009(8):80-83.) Mainly analyze the influence of various parameter settings of spectrum analyzer and how to set parameters correctly from the principle , so as to obtain accurate signal power measurement results. The above literature mainly analyzes the parameter setting of the spectrum analyzer when measuring electromagnetic radiation, but does not give a specific correction method

Application No. 2017102940481 discloses a method for measuring and correcting electromagnetic radiation in a Gaussian white noise environment. This method can only solve electromagnetic radiation measurement correction in a Gaussian white noise environment, and cannot be used for electromagnetic radiation measurement correction in an impulsive noise environment.

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