Intelligent two-channel real-time compensation method for electromagnetic radiation testing

Abstract

The invention provides an intelligent two-channel real-time compensation method for electromagnetic radiation testing. Two channels with both time and frequency synchronized are used for simultaneously receiving signals of tested devices and background noise in complex environments, and electromagnetic signals in the two channels are compensated in real time through self-adapting wavelet neural network compensation algorithm to obtain practical and accurate electromagnetic radiation conditions of the tested devices. The method adopts the two-channel real-time compensation technology to solve problems of instantaneity of two-channel signals and processing of same-frequency signals, improves testing accuracy, widens application range and reduces cost of electromagnetic radiation testing.

Description

technical field [0001] The invention relates to the testing field, in particular to a real-time compensation method for electromagnetic radiation testing in complex electromagnetic environments. Background technique [0002] At present, the electromagnetic radiation test of electronic equipment generally needs to be carried out in a shielded room or an open field, but now the electromagnetic environment in nature is very harsh. It is necessary to find an open field to make its electromagnetic environment level lower than the radiation emission limit of the electromagnetic compatibility test standard. is impossible. In addition, the shielding room is expensive and requires a lot of space, and is limited by the size of the object to be tested, especially when the equipment has been fixed on site, it is impossible to enter the shielding room. Therefore, conducting electromagnetic radiation testing in a complex electromagnetic environment has become an urgent problem to be solv...

AI Technical Summary

Problems solved by technology

[0003] The authorization number applied by Professor Marino Jr: US6980611, registration number: 09 / 497,292 US patent "System and method for measuring RF radiated emissions in the presence of strong ambient signals" proposed a dual-channel electromagnetic radiation test method, but its dual The channel is not real-time, which affects the test results

In the article "The Time-Domain Electromagnetic Interference Measurement System", Professor Florian Krug designed an electromagnetic interference test system using the time domain method, but the Fourier transform method cannot obtain the electromagnetic radiation when the noise and equipment interference are at the same frequency value

Images