High-precision indoor fusion positioning method based on GSM/MEMS fusion
The invention discloses a high-precision indoor fusion positioning method based on GSM/MEMS fusion. The method comprises the following steps: first, performing position fingerprint positioning by adopting searching and matching by utilizing position fingerprint characteristics caused by multipath an...
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Main Authors | , , |
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Format | Patent |
Language | Chinese English |
Published |
24.11.2017
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a high-precision indoor fusion positioning method based on GSM/MEMS fusion. The method comprises the following steps: first, performing position fingerprint positioning by adopting searching and matching by utilizing position fingerprint characteristics caused by multipath and non-line-of-sight transmission of a GSM radio signal; then, resolving the walking speed and the course angle of a target pedestrian according to output data of an inertial sensor device, and obtaining relative position information of a user; finally, fusing position results output by the GSM and the MEMS by utilizing an anti-tolerance extended Kalman filter. According to the method, a position fingerprint positioning result in a GSM environment and the output data of the MEMS are combined by introducing the anti-tolerance extended Kalman filtering algorithm, so that the advantages of positioning systems compensate each other; the influence on positioning precision caused by an accumulative error in an MEMS device |
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Bibliography: | Application Number: CN201710614908 |