数字化PCM/FM频偏控制算法研究  

Research on peak frequency deviation control for digital PCM/FM scheme

作　　者：董三军[1,2] 

机构地区：[1]中国空空导弹研究院,洛阳471009 [2]西北工业大学,西安710129

出　　处：《哈尔滨商业大学学报（自然科学版）》2017年第2期184-186,共3页Journal of Harbin University of Commerce：Natural Sciences Edition

摘　　要：PCM/FM作为一种基本的调制体制在遥测中得到了广泛的应用,其频偏的大小与误码率、带宽等有直接的关系.通过波形控制的方法,通过设计合适的脉冲波形,在保证带宽不增加的要求下,设计出了满足遥测应用需求的成型脉冲,相比MSK、升余弦MSK等CPFSK,其理论频偏能够满足遥测的要求.通过仿真可以看出,在频偏满足要求的条件下,其带外衰减更快,比上述的CPFSK更加具有吸引力.PCM/FM functions as a basic modulation scheme is widely used in the telemetry. The module index is very important due to the relationship with bit error rate and the bandwidth. This paper proposed a new method of wave controlling, which basically was a pulse and meets the requirement of the bandwidth. Compared with the MSK which was a rectangle pulse essentially and raised cosine pulse, this method could easily satisfy the requirement for index. It was very interesting that the simulation results show not only was the index controlled but also the the decay beyond the bandwidth was very fast than the other two scheme talked above.

关 键 词：PCM/FM 频偏控制 遥测 

分 类 号：V243.5[航空宇航科学与技术—飞行器设计]