Grey Theory Based Odometer Scale Factor Calibration Method for Integrated Navigation System

2009 ◽  
Author(s):  
Liu Jiang ◽  
Cai Bai-gen ◽  
Wang Jian ◽  
Tang Tao
Keyword(s):  
Navigation System ◽  
Calibration Method ◽  
Scale Factor ◽  
Grey Theory ◽  
Integrated Navigation ◽  
Integrated Navigation System

A Position Observation-Based Calibration Method for LDV/SINS Integrated Navigation System

2021 ◽  
Author(s):  
Zhiyi Xiang ◽  
Qi Wang ◽  
Rong Huang ◽  
Chongbin Xi ◽  
Xiaoming Nie ◽  
...  
Keyword(s):  
Navigation System ◽  
Calibration Method ◽  
Integrated Navigation ◽  
Integrated Navigation System

Adaptive Two-stage Kalman Filter for SINS/Odometer Integrated Navigation Systems

2016 ◽  
Vol 70 (2) ◽  
pp. 242-261 ◽  
Author(s):  
Hongsong Zhao ◽  
Lingjuan Miao ◽  
Haijun Shao
Keyword(s):  
Kalman Filter ◽  
Navigation System ◽  
Scale Factor ◽  
Navigation Systems ◽  
Integrated Navigation ◽  
Two Stage ◽  
Integrated Navigation System ◽  
White Noise Sequence ◽  
Noise Sequence ◽  
Computation Load

In Strapdown Inertial Navigation System (SINS)/Odometer (OD) integrated navigation systems, OD scale factor errors change with roadways and vehicle loads. In addition, the random noises of gyros and accelerometers tend to vary with time. These factors may cause the Kalman filter to be degraded or even diverge. To address this problem and reduce the computation load, an Adaptive Two-stage Kalman Filter (ATKF) for SINS/OD integrated navigation systems is proposed. In the Two-stage Kalman Filter (TKF), only the innovation in the bias estimator is a white noise sequence with zero-mean while the innovation in the bias-free estimator is not zero-mean. Based on this fact, a novel algorithm for computing adaptive factors is presented. The proposed ATKF is evaluated in a SINS/OD integrated navigation system, and the simulation results show that it is effective in estimating the change of the OD scale factor error and robust to the varying process noises. A real experiment is carried out to further validate the performance of the proposed algorithm.

Calibration Method of Two-Dimensional Laser Doppler Velocimeter in Land Integrated Navigation System

2018 ◽  
Vol 45 (8) ◽  
pp. 0804004
Author(s):  
王琦 Wang Qi ◽  
高春峰 Gao Chunfeng ◽  
聂晓明 Nie Xiaoming ◽  
周健 Zhou Jian ◽  
魏国 Wei Guo ◽  
...  
Keyword(s):  
Navigation System ◽  
Calibration Method ◽  
Laser Doppler ◽  
Laser Doppler Velocimeter ◽  
Two Dimensional ◽  
Integrated Navigation ◽  
Integrated Navigation System
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