调制函数对被动型氢原子频标频率稳定度影响分析  

The Influence of Modulation Function to Frequency Stability of Passive Hydrogen Maser

作　　者：曹昱[1] 吕善伟[1] 冯克明 党群[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100083 [2]北京无线电计量测试研究所,北京100039

出　　处：《宇航计测技术》2006年第1期1-5,共5页Journal of Astronautic Metrology and Measurement

摘　　要：提高被动型原子频标的频率稳定度是原子频标设计中最重要的目标,文中分别详细推导了正弦波相位(频率)调制、方波相位(频率脉冲)调制、三角波相位(方波频率)调制时对频率稳定度有影响的Bn(m)值的计算公式;在此基础上分别计算为获得最佳频率稳定度时三种调制函数对应的调制指数,并得到正弦波调制时频率稳定度最好的结果,这对原子频标伺服电路的设计提供了理论依据。The moat important objective of desiging passive atomic frequency standard is to improve its ftrquency stability. This paper gives the formulss of computing Bn （m） correspond to sine wave phase modulation, square phase modulation and triangle wave phase, respectively. The modulation index of three modulation functions can be ealeulatod for the best frequency stability. Finally, It is concluded that the sine wave modulation is optimal in three modulation functions. The result is useful for the design of servo circuit of passive hydrogen maser.

关 键 词：调制函数 +被动型氢原子频 频率稳定度 调制指数 

分 类 号：TM935.12[电气工程—电力电子与电力传动]