Volume 36, Number 2, April 2018
|Page(s)||396 - 402|
|Published online||03 July 2018|
Combined Navigation MethodGPS
State Key Laboratory of Geo-Information Engineering, Xi'an 710054, China
2 Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, China
3 School of Computer Science, Northwestern Polytechnical University, Xi'an 710072, China
According to the characteristics of DMI with high-precision position information, a navigation method combines DMIs with GPS and IMU is proposed in this paper. Firstly, the prototype system architecture is presented and its operational principle is discussed. Secondly, some key technologies are studied, which include integrated organization method of DMIs and road net data, the position method based on DMI matching with real-time image and the federal Kalman filter model with DMI, GPS and IMU. Finally, experimental results show that the proposed method can counteract GPS signal's unlocking problem and the inertial component's divergence for its error accumulation with time in a vehicle navigation system, whose positioning accuracy and robustness are improved in complex environment.
Key words: digital measurable image / image matching / global positioning system / inertial measurement unit / federal Kalman filter
关键字 : 可量测影像 / 影像匹配 / 卫星导航系统 / 惯性测量单元 / 联邦卡尔曼滤波
© 2018 Journal of Northwestern Polytechnical University. All rights reserved.
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