用频装备带内双频窄谱电磁辐射阻塞干扰效应预测模型

针对传统单频连续波电磁辐射敏感度试验方法无法满足用频装备多辐射源共同作用下复杂电磁环境适应性评估的技术需求,本着有限目标的原则,对用频装备在带内双频窄谱电磁辐射作用下的阻塞干扰效应预测问题进行了研究.从用频装备单频和调幅连续波敏感度试验数据出发,基于用频装备带内电磁能量耦合及共性干扰、损伤作用机理分析,研究了有效值敏感和峰值敏感两类用频装备带内双频窄谱电磁辐射阻塞干扰效应预测模型并提出了预测方法,给出了受试用频装备适用预测模型的判定方法,并以某型超短波通信电台为受试对象,试验验证了模型及方法的有效性.研究结果表明:本文提出的模型和方法可有效应用于用频装备在带内双频电磁辐射作用下的阻塞干扰效应预测和评估.

Prediction model of blocking interference effects for electronic equipment under the condition of the dual-frequency narrow spectrum in-band electromagnetic radiation

According to facts that the traditional single frequency continuous wave electromagnetic radiation susceptibility test methods cannot satisfy the requirements of the multi-frequency complex electromagnetic environment adaptability evaluation for the electronic equipment, following the principle of limited target, the blocking interference effects prediction problems for the electronic equipment under the condition of the dual-frequency narrow spectrum in-band electromagnetic radiation is researched. Based on the single frequency and the amplitude modulation continuous wave electromagnetic radiation susceptibility test data, considering the theoretical analysis of the electromagnetic energy coupling and the interference damage acting mechanism for the electronic equipment, the dual-frequency in-band electromagnetic radiation blocking interference effects prediction models and prediction methods for two kinds of electronic equipment are established separately. The one electronic equipment is sensitive to the effective value of the in-terference signal. The other one is sensitive to the peak value. The decision method of choosing prediction model for the different electronic equipment is put forward. The typical ultra-short wave communication stations are selected as radio equipment under test. The test results verify the validity of the prediction model and the prediction method. The above researches indicate that the model and method presented in this paper can be effectively used to predict and evaluate the blocking interference effects for the radio equipment under the condition of the in-band dual-frequency electromagnetic radiation.