Citation: | LI Hao, CHEN Qiang, XU Yixiong. Underground pipeline trajectory measurement method based on reduced inertial navigation[J]. Journal of Shanghai University of Engineering Science, 2022, 36(4): 364-368. doi: 10.12299/jsues.22-0106 |
In view of the high cost of current underground pipeline trajectory measurement system based on inertial navigation principle, the cost of the system was effectively reduced by reducing the number of inertial sensors. Firstly, the formula of using only uniaxial angular velocity and biaxial acceleration data to restore pipeline trajectory was derived. Then, the complete ensemble empirical mode decomposition with adaptive noise was used to process the original data of inertial sensors. Finally, the pipeline trajectory was reconstructed by using the derived formula and the processed data. In the 75 m long test pipeline, the maximum deviation of the reconstruction track is less than 0.2% of the total length, and the cost of the sensor is reduced by half, which has strong practical value.
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