CAJ | 학술논문

提出一种双频带混合GPS/Galileo射频前端接收系统。所设计的接收系统同时接收GPSL1/L5和GalileoE1/E5a两路信号，从而节约系统资源，降低成本。并结合现有资源，给出一种接收机的设计实例，重点分析了混频部分、本振部分及控制部分的实现方法并给出了具体的电路设计。通过利用频谱仪及射频信号发生器对设计实例进行系统测试，系统的整机增益和噪声系数全部符合设计指标。
제출일충쌍빈대혼합GPS/Galileo사빈전단접수계통。소설계적접수계통동시접수GPSL1/L5화GalileoE1/E5a량로신호，종이절약계통자원，강저성본。병결합현유자원，급출일충접수궤적설계실례，중점분석료혼빈부분、본진부분급공제부분적실현방법병급출료구체적전로설계。통과이용빈보의급사빈신호발생기대설계실례진행계통측시，계통적정궤증익화조성계수전부부합설계지표。
A kind of dual-band GPS/Galileo RF front-end receiving system is proposed. The receiving system can receive GPSL1/L5 signal and GalileoE1/E5 signal simultaneously , so as to save the system resources and reduce the cost. A design example of receiver is provided in combination with available resources. The implementation method of frequency mixing,local oscillating and control sections are analyzed emphatically. The circuit design is also given out. The design example was tested by means of frequency spectrograph and RF signal generator. The result proves that the gain and noise figure of the system fits with the design indexes.