Title
A Cost-Effective Vehicle Localization Solution Using an Interacting Multiple Model-Unscented Kalman Filters (IMM-UKF) Algorithm and Grey Neural Network.
Abstract
In this paper, we propose a cost-effective localization solution for land vehicles, which can simultaneously adapt to the uncertain noise of inertial sensors and bridge Global Positioning System (GPS) outages. First, three Unscented Kalman filters (UKFs) with different noise covariances are introduced into the framework of Interacting Multiple Model (IMM) algorithm to form the proposed IMM-based UKF, termed as IMM-UKF. The IMM algorithm can provide a soft switching among the three UKFs and therefore adapt to different noise characteristics. Further, two IMM-UKFs are executed in parallel when GPS is available. One fuses the information of low-cost GPS, in-vehicle sensors, and micro electromechanical system (MEMS)-based reduced inertial sensor systems (RISS), while the other fuses only in-vehicle sensors and MEMS-RISS. The differences between the state vectors of the two IMM-UKFs are considered as training data of a Grey Neural Network (GNN) module, which is known for its high prediction accuracy with a limited amount of samples. The GNN module can predict and compensate position errors when GPS signals are blocked. To verify the feasibility and effectiveness of the proposed solution, road-test experiments with various driving scenarios were performed. The experimental results indicate that the proposed solution outperforms all the compared methods.
Year
DOI
Venue
2017
10.3390/s17061431
SENSORS
Keywords
Field
DocType
vehicle localization,uncertain noise,Interacting Multiple Model,Grey Neural Network
Inertial frame of reference,Training set,Control theory,Algorithm,Kalman filter,Inertial measurement unit,Global Positioning System,Engineering,GPS signals,Fuse (electrical),Artificial neural network
Journal
Volume
Issue
ISSN
17
6.0
1424-8220
Citations 
PageRank 
References 
4
0.42
21
Authors
3
Name
Order
Citations
PageRank
xu qimin1153.42
Xu Li2102.18
Ching-Yao Chan37923.48