空间型Raman脉冲冷原子陀螺仪的绝对角速度测量  

Absolute Rotation Measurement for Space-Domain Raman Pulses Cold Atom Gyroscope

作　　者：邹鹏飞[1] 颜树华[1] 林存宝[1] 

机构地区：[1]国防科学技术大学机电工程与自动化学院,湖南长沙410073

出　　处：《激光与光电子学进展》2014年第5期97-103,共7页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(51275523)

摘　　要：介绍了图解法分析冷原子干涉仪的基本原理,建立了空间型Raman脉冲冷原子陀螺仪的理论模型。通过对冷原子干涉仪近似数学模型的变换,研究了原子初速度与跃迁概率之间的关系,阐述了基于辅助角速度测量的原子速度扫描法测量原理。在原子干涉仪精确模型的基础上,利用Raman激光频率调制对多普勒效应进行补偿,并利用相位调制进行修正以满足原子速度扫描法中的相位关系。数值仿真计算结果表明,在辅助角速度测量量程内,经过补偿修正后的原子速度扫描法能实现对绝对角速度的高精度测量。The fundamental principle of cold atom interferometer is analyzed using a novel diagrammatic approach, and the theoretical modeling of space-domain Raman pulses cold atom gyroscope is created. Through the manipulation of approximate mathematical model of the cold atom interferometer, the relationship between the velocity and the transition probability of atom is studied to expound the atom＇s velocity scanning method based on assistant angular velocity sensor. In consideration of precise theoretical modeling, the Raman frequency modulation is used to restrain the Doppler effect and the phase modulation is used to fix the phase relationship in atom＇s velocity scanning method. The numerical simulation calculation results show that the method with compensation and correction can realize rotation measurement with high-precision within the measurement range of the assistant angular velocity sensor.

关 键 词：测量 角速度测量 陀螺仪 原子干涉仪 速度扫描法 误差分析 

分 类 号：TH824[机械工程—仪器科学与技术]