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An Improved Coarse Alignment Algorithm for Odometer-Aided SINS Based on the Optimization Design Method
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DOI：10.3390/s18010195.png)
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摘要
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An improved coarse alignment (ICA) algorithm is proposed in this paper with a focus on improving alignment accuracy of odometer-aided strapdown inertial navigation system (SINS) under variable velocity and variable acceleration condition. In the proposed algorithm, the outputs of inertial sensors and odometer in a sampling interval are linearized rather than assumed to be a constant, which improves the accuracy of the vector observations and the precision of coarse alignment. Simulation and field test results illustrate that, under variable velocity and variable acceleration condition, the proposed algorithm can obtain a better alignment performance than conventional coarse alignment method.
Keyword:
odometer-aided SINS
linear approximation
coarse alignment
optimized alignment
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IF:
3.5
论文数:
7.2W
被引数:
20.9W
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