导弹与航天运载技术
導彈與航天運載技術
도탄여항천운재기술
MISSILES AND SPACE VEHICLES
2014年
5期
70-72
,共3页
夏国江%宋锐%田园园%蓝鲲
夏國江%宋銳%田園園%藍鯤
하국강%송예%전완완%람곤
信号成型%带宽效率%贝塞尔滤波器%根升余弦滤波器
信號成型%帶寬效率%貝塞爾濾波器%根升餘絃濾波器
신호성형%대관효솔%패새이려파기%근승여현려파기
Signal shaping%Bandwidth efficiency%Bessel filter%Square-root raised-cosine filter
运载火箭测控系统信息传输速率的增加使得射频频谱资源日益紧张。针对目前使用的 FM 和 BPSK 调制,在基带进行频谱成型处理,以减小各无线电信号间的互相干扰。仿真结果表明,信号兼容性得到了极大改善。
運載火箭測控繫統信息傳輸速率的增加使得射頻頻譜資源日益緊張。針對目前使用的 FM 和 BPSK 調製,在基帶進行頻譜成型處理,以減小各無線電信號間的互相榦擾。倣真結果錶明,信號兼容性得到瞭極大改善。
운재화전측공계통신식전수속솔적증가사득사빈빈보자원일익긴장。침대목전사용적 FM 화 BPSK 조제,재기대진행빈보성형처리,이감소각무선전신호간적호상간우。방진결과표명,신호겸용성득도료겁대개선。
The radio frequency spectrum has become more inadequate, as the data rates continue to grow for launch vehicle telemetry and telecommand. For FM and BPSK modulation which are widely used today, signal spectrum shaping is processed at baseband in order to reduce mutual interference between wireless signals. Computer simulation results show that the signal compatibility is greatly improved.