Predicted method of radiation field strength mode of short wave antenna

Abstract

The invention relates to a method for model prediction of the radiation field intensity generated after a high-power short-wave transmitting antenna is loaded on a complex platform. The method is to scale down the model according to the structure of the actual short-wave antenna and the complex platform in a ratio of 1:n; set up a short-wave antenna radiation field strength model prediction test system, and the short-wave antenna of the scaled model is compared with the short-wave antenna radiation field strength model prediction test system Connect; the output signal of the RF signal source of the test system is amplified by the RF power amplifier and then fed to the short-wave antenna of the scaled model, and the field strength of the model measured by the field strength measuring instrument is collected, and the data processing module software in the test control computer is used to call each Group calibration data and model field strength data to calculate the radiation field strength of the actual antenna. The invention can accurately predict the radiation field intensity generated after the high-power short-wave transmitting antenna is arranged on a complex platform by calibrating the test system and processing the data of the radiation field intensity of the model antenna under the condition of low transmission power in the laboratory.

Description

technical field [0001] The invention relates to a method for model prediction of the radiation field intensity generated after a high-power short-wave transmitting antenna is loaded on a complex platform. Background technique [0002] The distribution of radiation field intensity produced by high-power short-wave transmitting antennas when working on complex platforms has always been the most concerned issue in the overall design of complex platforms. It directly affects the safety performance of personnel, electric ignition devices, and fuel. At present, the prediction method of the radiation field intensity generated after the high-power short-wave transmitting antenna is loaded on a complex platform is mainly through the simulation calculation of the electromagnetic field calculation software, or the measurement of the radiation field intensity generated by the actual antenna itself. Due to the complex structure and boundary conditions of complex platforms such as ships a...

AI Technical Summary

Problems solved by technology

Due to the complex structure and boundary conditions of complex platforms such as ships and aircraft, when using electromagnetic calculation software to calculate, due to the limitation of the accuracy of the calculation method and calculation model and the capacity of the computer, the calculation results have a large error with the actual situation

On the one hand, it is difficult to completely simulate the actual structural environment of the complex platform after the antenna is installed, and the radiation field distribution generated by the short-wave transmitting antenna is greatly affected by the structural environment. Due to the differences in boundary conditions such as the structural environment, the measurement results still cannot accurately reflect the distribution of electromagnetic field strength generated by the shortwave antenna installed on the actual platform; A threat to the health and safety of testers

After the platform is built, the actual measurement will be carried out. If the measured short-wave radiation field strength exceeds the standard in key parts, it will be necessary to modify the built platform, which will be very troublesome and require a lot of manpower, time and cost.

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