FPIR系统多通道射频干扰信号检测技术的优化分析

摘要

近年来微波辐射计的应用越来越重要,尤其是FPIR(Full Polarization Interferometric Radiometer)技术的提出,使得辐射计得到了进一步的发展应用.与此同时,由于地球电磁干扰环境日益复杂,也使得辐射计的应用受到了极大的限制.本文主要是利用FPIR系统辐射计中多通道的技术来优化射频干扰信号检测的环境,提升检测的效率.本文详细的阐述了FPIR系统多通道信号产生的原理,采用时频分析的方法对干扰信号进行检测,并且利用MATLAB软件对FPIR系统多通道的影响进行仿真实验和验证;在此基础上,优化了时频分析方法的检测效果,并通过实验仿真在实践中验证了多通道技术优化检测环境的可行性和有效性.%In recent years,the application of microwave radiometer is becoming more and more important,especially the FPIR (Full Polarization Interferometric Radiometer) technology has been proposed,which makes the Radiometer technology have more application areas.At the same time,due to the increasing complexity of the electromagnetic interference environment of the earth,the application of the radiometer has been restricted greatly.In this paper,we use the multi-channels technology in FPIR system to optimize the environment of the radio frequency interference signal detection,and improve the detection efficiency.The principle of multi-channels signal generation in FPIR system is described in detail,and the application theory of time frequency analysis method is analyzed,and the effect of the multi-channels technology in FPIR system is simulated and verified by using the MATLAB software.on this basis,the detection effect of the time frequency analysis method is optimized,and the feasibility and the advantages of that using the multi-channels technology in FPIR system to optimize detection environment are verified by experiments.