A verification method for aircraft cabin electromagnetic model under the condition of high-intensity radiation field

Abstract

An aircraft cabin electromagnetic model verification method under the condition of high-intensity radiation field, establishes a three-dimensional geometric electromagnetic model of the aircraft cabin, and obtains the field strength value Esim inside the aircraft cabin through simulation calculation, and builds a high-intensity radiation including the aircraft cabin The field scanning test system detects the field strength value Etest inside the aircraft cabin, calculates the error between the field strength value Esim obtained from the simulation and the field strength value Etest obtained from the test, and if the error is greater than the threshold value, adjust the three-dimensional value of the aircraft cabin The parameters of the geometric electromagnetic model, and re-calculate the field strength value Esim inside the aircraft cabin, and recalculate the error until the error is less than or equal to the threshold value, then the verification is completed. The verification test process of the present invention is simple, and the accuracy requirements met during the verification can be flexibly set according to actual engineering requirements, and the accuracy of the electromagnetic model can be flexibly controlled. The verification method is versatile and can be used for all-metal aircraft cabins and composite materials Aircraft cabins, metal / composite hybrid aircraft cabins, the cost of calibration testing is low.

Description

technical field [0001] The invention relates to the technical field of electromagnetic environment effects, in particular to a method for verifying an electromagnetic model of an aircraft cabin under the condition of a high-intensity radiation field. Background technique [0002] High-intensity radiation field refers to the radiation of high-power transmitters such as radar, radio, and navigation on the ground, offshore platforms, or aircraft. It is characterized by wide frequency band and long action time. In recent years, more and more electronic systems that perform key functions on aircraft platforms have gradually replaced traditional mechanical control systems. Electronic circuits with low energy consumption and high integration are more sensitive to high-intensity radiation field environments. In addition, aircraft structures are increasingly used A new type of composite material reduces the electromagnetic shielding performance of the aircraft. High-intensity radiat...

AI Technical Summary

Problems solved by technology

The effect of high-intensity radiation field protection design directly depends on the accuracy of the established electromagnetic model. However, there is no verification method for the electromagnetic model of the aircraft cabin, especially for aircraft cabins made of composite materials. , the aircraft cabin is sensitive to external electromagnetic field irradiation conditions, and the electromagnetic field distribution in the cabin will continue to change with composite materials of different structures and electromagnetic properties. In order to establish an electromagnetic model that simulates the actual aircraft cabin, it is necessary to propose a high-intensity radiation field condition The verification method of the electromagnetic model of the aircraft cabin provides effective support for the modeling and simulation prediction of the electromagnetic environment effect of the aircraft cabin under the condition of high-intensity radiation field and the assessment of electromagnetic hazards

Images