CAJ | 학술논문

运用开源软件无线电（GNU＇s Not Unix Radio，GNU Radio）技术和与之配套的通用软件无线电外设（The Second—generation Universal Software Radio Peripheral，USRP2），设计出了未知无线电信号自动检测系统。系统采用能量检测法，能够快速识别一定频段内未知无线电信号，并记录其带宽、中心频率和起止时间，同时存储相应的同相正交（Inphaseand Quadrature，IQ）数据，为后续载频的精确估计提供必要的参数。在实际测试中发现，该系统检测速度快、准确率高，对未知强信号检测具有一定的可靠性和实用性。
운용개원연건무선전（GNU＇s Not Unix Radio，GNU Radio）기술화여지배투적통용연건무선전외설（The Second—generation Universal Software Radio Peripheral，USRP2），설계출료미지무선전신호자동검측계통。계통채용능량검측법，능구쾌속식별일정빈단내미지무선전신호，병기록기대관、중심빈솔화기지시간，동시존저상응적동상정교（Inphaseand Quadrature，IQ）수거，위후속재빈적정학고계제공필요적삼수。재실제측시중발현，해계통검측속도쾌、준학솔고，대미지강신호검측구유일정적가고성화실용성。
A system for detecting unknown radio signals automatically by using GNU Radio and USRP2 (the second-generation Universal Software Radio Peripheral)is designed. With energy detection method,some functions of the system can be achieved such as distinguishing unknown radio signals quickly in a certain frequency band, recording their bandwidth, center frequency, beginning and ending time, while storing relevant IQ data. The previous work provides necessary parameters for estimating carrier frequency accurately. In the actual test, the system is of fast detection, high accuracy, and is reliable and practical to detect strong radio signals.