STARLIT:3D Indoor Positioning with Smartphones and Reflection Light
This paper presents STARLIT,a system that enables a single LED to localize smartphone to within sub-meter.The LED transmits its coordinates encoded in human-imperceptible optical pulses.Dif-ferent from the existing camera-based approaches,which need to capture images of the luminaires within a short light-to-camera dis-tance,we utilize the reflection light from the floor for positioning.As the camera sensor contains millions of pixels,it can be consid-ered as a sensor array.By exploiting the rolling shutter mechanism in the smartphone cameras,we propose a solution to extract the re-ceived signal strengths(RSSs)of sampled pixel rows from the cap-tured images.Given the measured RSSs,we establish an equation set with Lambertian model and the camera projection model to solve the location of the smartphone.We have implemented STAR-LIT and evaluated its performance in a lab room.Our experiments demonstrate that STARLIT can achieve average positioning error around 40 cm and 80-percentile error around 55 cm.
Indoor positioning Visible light Camera Smartphone LED
Fan Yang Shining Li Jiangjiang Zhang Shaoqing Xu Li Cong Yinghai An
Northwestern Polytechnical University Technology Promotion Center of Press,Publishing,Radio,Film and Television of Shaanxi Province State Grid Jilin Electric Power Co.,Ltd.
国际会议
2019国图灵大会(ACM Turing Celebration conference-China 2019 )
成都
英文
433-437
2019-05-17（万方平台首次上网日期，不代表论文的发表时间）