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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:Hua Liu,Tong Liu,Hang Guo.Context-Aware Using Carrier Phase for Adaptive MEMS IMU/GNSS Filtering in Deep Urban Navigation[J].Journal of Harbin Institute Of Technology(New Series),2013,20(2):45-49.DOI:10.11916/j.issn.1005-9113.2013.02.009.
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Context-Aware Using Carrier Phase for Adaptive MEMS IMU/GNSS Filtering in Deep Urban Navigation
Author NameAffiliation
Hua Liu School of Automation, Beijing Institute of Technology, Beijing 100081,China 
Tong Liu School of Automation, Beijing Institute of Technology, Beijing 100081,China 
Hang Guo Academy of Space Technology, Nanchang University, Nanchang 330031,China 
Abstract:
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.
Key words:  MEMS IMU  GNSS  Context-Aware  Adaptive Filtering
DOI：10.11916/j.issn.1005-9113.2013.02.009
Clc Number:TP23
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