Research on Vehicle Positioning Method Based on Underground Garages

With the continuous development of urbanization, number vehicles has increased year by year. In order to solve hard-to-park problem, underground garages have been built on a large scale in many cities. However, due fact that GPS signals are kept out garage, technology does not work. As consequence, drivers cannot use navigation equipment search for parking space. view this, vehicle positioning technique hold public attention and relevant research done. this paper, we propose an efficient method accurate positioning. First, low-power Bluetooth device, then Gaussian filter optimize RSSI ranging algorithm, maximum likelihood improve three-loop algorithm. Finally, comparison is made between algorithm traditional A experiments proved can be used determine positions garages.