CAJ | 학술논문

GoTa数字集群通信系统是应用范围最广和国际化程度最高的国产数字集群系统。将GoTa系统移频应用，使其能够突破频段限制，满足更多用户的集群调度通信需求。移频终端是GoTa集群通信系统移频应用的重要设备，主要由主控模块、移频模块、GoTa模块等构成。介绍了GoTa系统移频应用的工作原理，提出了一种GoTa移频终端解决方案。并给出了移频模块、接收待机等技术难点的解决方法。样机通过系统测试，实现非标准频段下的GoTa集群功能。
GoTa수자집군통신계통시응용범위최엄화국제화정도최고적국산수자집군계통。장GoTa계통이빈응용，사기능구돌파빈단한제，만족경다용호적집군조도통신수구。이빈종단시GoTa집군통신계통이빈응용적중요설비，주요유주공모괴、이빈모괴、GoTa모괴등구성。개소료GoTa계통이빈응용적공작원리，제출료일충GoTa이빈종단해결방안。병급출료이빈모괴、접수대궤등기술난점적해결방법。양궤통과계통측시，실현비표준빈단하적GoTa집군공능。
GoTa(Global Open Trunking Architecture) is a typical domestic digital trunking system with independent intellectual property right and also a well-known system all over the world. And it is widely used and has a huge amount of users. By breaking through the limitation of working frequency and expanding the working frequency to a broad band, the frequency shifting application of GoTa could be done, thus to meet the demands of more users. The terminal of frequency shifting GoTa system, as a very important equipment, is mainly composed of central control module, frequency shifting RF module and basic GoTa module. This paper, based on the working principle of GoTa frequency shifting application, proposes a novel solution for the design of frequency shifting terminal, gives a detailed analysis of the key issues, including the frequency shifting RF module and the power management of receiver. Finally, the experiment on prototype frequency shifting GoTa system indicates that the scheme is feasible and effective and that all the functions of frequency shifting GoTa terminal could work well.