| 再入遥测中的双重混合调制体制 |
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| 引用本文： | 张健.再入遥测中的双重混合调制体制[J].中国空间科学技术,2000,20(1):24-28,57. |
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| 作者姓名： | 张健 |
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| 作者单位： | 中国工程物理研究院!绵阳621900 |
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| 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。
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| 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 |
The Dual-Modulation Compound System in Reentry Telemetry |
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| Zhang Jian.The Dual-Modulation Compound System in Reentry Telemetry[J].Chinese Space Science and Technology,2000,20(1):24-28,57. |
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| Authors: | Zhang Jian |
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| 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. |
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| Keywords: | Reentry telemetry Pulse code modulation Pulse position keying telemetry system Frequency discrimination |
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