中国空间科学技术

中国空间科学技术

• •    

再入遥测中的双重混合调制体制

张健   

  1. 中国工程物理研究院!绵阳621900
  • 发布日期:2000-02-25

The Dual-Modulation Compound System in Reentry Telemetry

Zhang Jian (China Academy of Engineering Physics,Mianyang 621900)   

  • Online:2000-02-25

被引次数

9

摘要： 深入分析了再入遥测中ＰＰＫ／ＯＯＫ 和ＰＣＭ／ＦＭ 两种信号同频段共存的双重混合调制原理及其解调性能。结论表明： 双重混合调制对于提高信道容量是可行的。

关键词: 再入遥测系统, 脉冲编码调制, 脉冲键控遥测系统, 鉴频

Abstract: The dual modulation compound system (DMCS) in reentry telemetry is analyzed.In this system,two kinds of modulation,Pulse Position Keying/On Off Keying (PPK/OOK) and Pulse Code Modulation/Frequency Modulation (PCM/FM) are employed simultaneously.The conclusion shows DMCS can obviously improve the channel capacity compared with that of PPK/OOK system.