基于小波降噪误差方差模型的GPS/SINS组合导航技术  

Technique of GPS/SINS Integrated Navigation Based on Error Variance Model of Wavelet Denoising

作　　者：林雪原[1] 梁发麦[1] 徐志斌[1] 

机构地区：[1]海军航空工程学院电子信息工程系,山东烟台264001

出　　处：《兵工自动化》2010年第10期66-70,共5页Ordnance Industry Automation

基　　金：国家自然科学基金项目基于尺度的综合导航系统信息融合方法研究(60874112);"泰山学者"建设工程专项经费资助

摘　　要：为进一步提高GPS/SINS组合导航系统的精度,对基于小波降噪误差方差模型的GPS/SINS组合导航技术进行研究。根据小波多尺度理论,分析了小波降噪前后信息的误差方差模型间的理论关系,推导出在小波多尺度分析中平滑信号误差的理论方差模型,将该理论模型引入到GPS后,试验分析证明理论分析与试验结果基本一致;然后以该理论模型为基础,提出了基于小波降噪误差方程模型的GPS/SINS组合导航系统并进行了静态试验验证。试验结果表明,该模型能显著地提高组合导航系统各项导航参数的精度。In order to improve the precision of GPS/SINS integrated navigation system further,after introduce the principle of wavelet’s multi-scale analysis,deduce the theoretical variance model of smooth signal during the wavelet’s multi-scale analysis.When this model is applied to GPS’s output information,the experimental results show that this theoretical variance model is basically consistent with the experimental results;then on the basis of the above,put forwards one new method for GPS/SINS integrated system based on the theoretical variance model of GPS output information,and then this new method is validated by the practical static experiment.The experimental results show that when this method is used,the precision of every navigation parameter is improved obviously.

关 键 词：小波降噪 多尺度分析 误差方差模型 组合导航系统 试验验证 

分 类 号：TN967.2[电子电信—信号与信息处理]