Improving BLE Based Localization Accuracy Using Proximity Sensors

Bluetooth Low Energy systems are one of the most popular solutions used for indoor localization. Unfortunately their accuracy might not be sufficient for some of the applications. One way to reduce localization errors is hybrid positioning, which combines measurement results obtained with different techniques. The paper describes a concept of a hybrid localization system in which Bluetooth Low Energy technology is supported with the use of laser proximity sensors. Results from both system parts are fused using a novel, simple positioning algorithm. The proposed system concept was tested using BLE and proximity sensors evaluation boards.