战场电磁兼容预测中的接收机建模研究

目的建立战场电磁兼容预测分析的接收机数学模型,包括接收机频率选择性模型、敏感度门限模型、互调模型及与接收机有关的修正系数计算模型等。方法在分析接收机干扰类型的基础上,建立上述数学模型,并探讨模型中的参数获取方法。结果给出了频率选择性模型分段折线斜率常数的获取方法,并对相关的互调系数、保护比等重要参数的实验测量方法进行了分析。结论建模结果可支持战场电磁接收装备仿真,为战场电磁兼容预测分析奠定基础。

Research on the Receiver Modeling in Forecast Simulation of Electromagnetic Compatibility

Objective To build receiver mathematical model for forecast simulation of electromagnetic compatibility, including receiver frequency selective model, susceptibility threshold model, inter-modulation model, and correction factor calculation model related with the receiver, etc. Methods Based on the analysis of the interference types of receiver, the aforementioned mathematical models were built, and the measure methods of correlative parameters were discussed. Results The methods for obtaining the piecewise polyline slope constant of the frequency selective model were presented, and the experimental measurement methods for important parameters such as inter-modulation factor and frequency protection ratio were analyzed. Conclusion The result of receiver modeling could support electromagnetic receiver simulation in battlefield, and lay a basis for predictive analysis of electromagnetic compatibility in battlefield.