【作者】 魏飞；

【导师】 曾晓东；

【作者基本信息】 西安电子科技大学 ， 光学工程， 2011， 硕士

【摘要】 激光陀螺具有反应快速、动态测量范围宽、线性度好、动态误差小、高精度、高可靠等优点。目前发达国家均已研制出了高精度的激光陀螺捷联惯性导航系统,并广泛应用于航空、航海等领域。因此,激光陀螺捷联惯性导航成为现代飞机、大型舰只和核潜艇的一种重要导航手段。功率衰减程度是衡量激光陀螺性能的重要指标,其对激光陀螺的研究开发和生产制造起到举足轻重的作用。本论文从激光陀螺的偏振态参数测量入手,通过大量的数据采集与分析,探索出一种能简洁客观地反映激光陀螺功率衰减程度的方法。在获得的参数数据能近似正确反映激光陀螺性能的情况下,我们对现有的激光陀螺样品进行工艺技术的改进就有据可依。我们通过测量未知功率衰减程度的激光陀螺的偏振态参数来预判其性能优劣。除此之外,我们努力提高激光陀螺的精度水平。这些研究对以激光陀螺为核心器件的捷联惯导系统的数据采集等其它方面有帮助,从而具有非常重要的国防和民用意义。更多还原

【Abstract】 Laser gyro has lots of advantages, such as high response speed, wide dynamicdetecting range, good linearity, little dynamic error, high precision, high reliability andso on. Developed countries have developed LSINS (Laser gyro strap-down inertialnavigation system) with high precision and applied it in the fields of aviation andnavigation popularly. So it becomes an important system of modern planes, warshipsand nuclear submarines.Power attenuation is an important parameter to influence the performance of thelaser gyro, and plays a decisive role of researching, developing and manufacturing.Based on the analysis of the measured data of the polarization state of the laser gyro, amethod to estimate the power attenuation by use of the measured data is proposed,eventually. That is to say, the performance of laser gyro is reflected by measuring someof the polarization states of the field, approximately.The technologies, on the basis of parameter measurement, which can in the case ofreflecting performance of the laser gyro is improved, approximately. As a result, theprediction of performance by measuring parameter of polarization state of laser gyro,which has unknown power attenuation, is discussed.In addition, the level of precision of laser gyros is improved by hard-working.These researches, helpful for data collection and other aspects of the inertial navigationsystem, with which the laser gyro as the core component, are of huge national defenseand civilian importance. The results obtained are predicted to provide a useful tool forpractical work.更多还原