共址调频和调幅系统干扰机理及干扰抑制需求分析  

Analysis of interference mechanism and suppression requirement for co-site FM and AM systems

作　　者：赵奎 王青 孟进[1] 唐健[1] 张磊[1] ZHAO Kui;WANG Qing;MENG Jin;TANG Jian;ZHANG Lei(National Key Laboratory of Science and Technology on Vessel Integrated Power System,Naval University of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学舰船综合电力技术国防科技重点实验室

出　　处：《国防科技大学学报》2020年第1期139-144,共6页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(61801502,61801501,71801220)

摘　　要：以调幅和调频电台为研究对象,对共平台接收电台前端低噪声放大器的非线性进行精确建模,分别对调幅电台和调频电台的干扰抑制需求进行解析,并通过数值仿真对解析模型进行验证。结果表明:所提解析模型较现有模型更为准确;当有用信号功率、噪声功率和干扰功率相同时,调幅通信系统的干扰抑制需求高于调频通信系统。Using amplitude modulation and frequency modulation transceivers as an object of study,a precise modeling of the nonlinearity of front-end low noise amplifier of the co-site receiving station was presented,the interference suppression requirements for the amplitude modulation and frequency modulation radios were analyzed,and the analytical model was verified by numerical simulation. The results show that the proposed analytical model is more accurate than the existing ones. In addition,when the interference power,the useful signal power and the noise power are the same,the requirement of interference suppression of the amplitude modulation communication system is higher than that of the frequency modulation communication system.

关 键 词：自适应干扰对消 调幅 调频 干扰机理 干扰抑制需求 

分 类 号：TN95[电子电信—信号与信息处理]