Research on Key Technology of Indoor Positioning Based on Fusion of Visual Information and Bluetooth Signal

The accuracy of the Bluetooth position, which has a high position speed, is not good. Visual information positioning takes more time, but its positioning accuracy is better. Since single positioning means cannot meet the needs of indoor positioning, we designed an indoor Location system based on fusion of Bluetooth signal and visual information in combination with their characteristics: According to the result of the rough positioning of the Bluetooth signal and the range of the Bluetooth positioning error, we can narrow the scope of the image database and use the visual information to locate the position with a high speed.; Then, according to the posterior probability distribution of the two kinds of positioning, we will integrate the two positioning results into the final positioning results. The simulation results show that the positioning performance of the system is better than that of pure Bluetooth positioning and visual information positioning.