CAJ | 학술논문

通过介绍西藏小功率中波、调频转播台在改善覆盖效果，提高边远地区综合覆盖率的特殊作用，并分析了其节目源单一依赖卫星的弊端．对DRM广播抗干扰、抗多径效应等的机理进行研究，提出对大功率发射台大功率中短波发射机进行DRM广播改造，用于节目源信号的传输，研究结果表明：DRM广播作为小功率中波、调频转播台的备用节目传输通路，成本低、可靠性高、易于实现．
통과개소서장소공솔중파、조빈전파태재개선복개효과，제고변원지구종합복개솔적특수작용，병분석료기절목원단일의뢰위성적폐단．대DRM엄파항간우、항다경효응등적궤리진행연구，제출대대공솔발사태대공솔중단파발사궤진행DRM엄파개조，용우절목원신호적전수，연구결과표명：DRM엄파작위소공솔중파、조빈전파태적비용절목전수통로，성본저、가고성고、역우실현．
This thesis deals with the special effects that the rebroadcast stations of low-power medium wave, frequency modulation have in bettering and enlarging their coverage in remote districts in Tibet. The disadvantages of the program resource only relying on satellite transmission are analyzed. Relevant research is carried out on the anti-jamming theories and anti-multipath effect. It is raised that high- power transimitters can be modified to launch programs through DRM radio, which can be used to transimit program source. It is proved that, as a transimission medium of the backup programs, low- power medium wave, frequency modulation rebroadcast stations, RDM radio is leconomical, reliable, and easy to handle.