复杂电磁环境下通信装备干扰预测方法

该文通过通信装备带内电磁干扰效应机理研究，分别以峰值场强敏感和平均功率敏感为基础，建立了两种用频装备带内多频电磁干扰预测模型，提出一种电磁干扰预测方法。首先通过单频和调幅波试验确定受试装备的敏感参量，然后根据不同敏感参量模型对某电磁环境下受试装备是否会受到干扰进行预测。该文以不同制式通用通信装备为试验对象，通过带内双频、带内三频电磁辐射效应试验对预测方法进行了验证。试验结果表明：通过单频和调幅连续波电磁辐射敏感度之间的差别能够区分受试设备符合哪种带内多频电磁干扰预测模型，对干扰峰值场强敏感的EUT1预测模型效应指数都略大于1，对干扰平均功率敏感的EUT2预测模型效应指数都在1左右。以此为基础提出了通信装备带内多频电磁干扰预测方法，能够有效解决通信装备带内多频电磁干扰预测问题。

Interference Prediction Method of Communication Equipment Under Complex Electromagnetic Environment

The communication equipment effect mechanism under in-band electromagnetic interference is studied in this paper. Two electromagnetic interference prediction models are established. One model is based on the assumption that in-band interference is sensitive to the amplitude of field strength, and the other is based on the assumption that in-band interference is sensitive to the average power. The sensitive parameter can be distinguished by sine and AM test, and the Equipment Under Test (EUT) interference is predicted according to different models. The sine and AM continuous wave test, in-band dual-frequency test, in-band triple-frequency test are conducted with two typical VHF radios as test objects. Experiment results show that EUT1 is sensitive to the amplitude of field strength, and the model results are slightly greater than 1, and EUT2 is sensitive to the average power. The model results are all approximate 1. The prediction method of in-band multi-frequency electromagnetic interference is modified and improved by the test results. The proposed prediction method is able to forecast the communication equipment interference effectively under the in-band multi-frequency electromagnetic environment.