Context-aware is becoming standard on the most mobile navigation devices. The performance of MEMS IMU / GNSS gains significant benefits from context information in terms of improvement of filter 's adaptive capabi...Context-aware is becoming standard on the most mobile navigation devices. The performance of MEMS IMU / GNSS gains significant benefits from context information in terms of improvement of filter 's adaptive capability. A context-aware algorithm using differential carrier phase was proposed to recognize a mobile MEMS IMU / GNSS equipped vehicle's stationary,slow moving or fast moving status. The corresponding context error in awarding was analyzed and consequently conducted two fading factors based on the analysis. The factors were applied in the system's adaptive filter with targeting applications in deep urban where severe multipath presents. The dense urban field test shows that the false alarm of proposed context-aware algorithm is less than 5% and the adaptive filtering can achieve around 15% improvement in terms of 1σ in two-dimension position accuracy.展开更多
MEMS(Micro Electron Mechanic Systems)技术是从专用集成电路(ASIC)技术发展过来的,已经在电子产品、汽车工业、机械、化工及医药等各领域得到广泛的应用。近年来,MEMS器件在航空领域的应用越来越受到各国重视。本文首先介绍了MEMS加...MEMS(Micro Electron Mechanic Systems)技术是从专用集成电路(ASIC)技术发展过来的,已经在电子产品、汽车工业、机械、化工及医药等各领域得到广泛的应用。近年来,MEMS器件在航空领域的应用越来越受到各国重视。本文首先介绍了MEMS加速度计、MEMS陀螺仪、MEMS-IMU惯性导航组合系统等目前在航空领域有一定应用前景的MEMS传感器,对这些传感器在国外的应用研究进行了汇总,最后,介绍国内已有初步进展的MEMS传感器设计应用,并指出我国的航空微时代的研究方向。展开更多
基金Sponsored by the National Natural Science Foundation of China(Grant No.61173076)
文摘Context-aware is becoming standard on the most mobile navigation devices. The performance of MEMS IMU / GNSS gains significant benefits from context information in terms of improvement of filter 's adaptive capability. A context-aware algorithm using differential carrier phase was proposed to recognize a mobile MEMS IMU / GNSS equipped vehicle's stationary,slow moving or fast moving status. The corresponding context error in awarding was analyzed and consequently conducted two fading factors based on the analysis. The factors were applied in the system's adaptive filter with targeting applications in deep urban where severe multipath presents. The dense urban field test shows that the false alarm of proposed context-aware algorithm is less than 5% and the adaptive filtering can achieve around 15% improvement in terms of 1σ in two-dimension position accuracy.
文摘MEMS(Micro Electron Mechanic Systems)技术是从专用集成电路(ASIC)技术发展过来的,已经在电子产品、汽车工业、机械、化工及医药等各领域得到广泛的应用。近年来,MEMS器件在航空领域的应用越来越受到各国重视。本文首先介绍了MEMS加速度计、MEMS陀螺仪、MEMS-IMU惯性导航组合系统等目前在航空领域有一定应用前景的MEMS传感器,对这些传感器在国外的应用研究进行了汇总,最后,介绍国内已有初步进展的MEMS传感器设计应用,并指出我国的航空微时代的研究方向。
