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本文对电子侦察接收机的增益压缩(或变频压缩)、各种互调失真、线性动态范围和无虚假动态范围给予简明的物理解释和数学描述,并给出了1dB 压缩点、互调抑制比和互调截点值的物理概念和数学表达式。在对放大器和混频器线性动态范围和虚假动态范围及其有关参量的基本定义和数学表达式的分析基础上,导出了放大器级联或放大器与混频器级联系统的总互调截点值的基本公式。利用这些基本关系式就可以估算接收机的线性动态范围和无虚假动态范围。
In this paper, the electronic reconnaissance receiver gain compression (or variable frequency compression), various intermodulation distortion, linear dynamic range and no false dynamic range to give a simple physical explanation and mathematical description, and gives the 1dB compression point, intermodulation suppression ratio And intermodulation cut-off point of the physical concepts and mathematical expressions. Based on the analysis of the basic definitions and mathematical expressions of the linear dynamic range and the false dynamic range of amplifiers and mixers and their related parameters, the total intermodulation of the amplifier cascade or amplifier cascaded with the mixer is derived The basic formula of value. Using these basic relationships, you can estimate the linear dynamic range and the pseudo-dynamic range of the receiver.