Description
Indoor positioning estimates the location of a person or device inside a building, where GNSS is unavailable. The technique inventory spans rssi-fingerprinting, csi-fingerprinting, angle-of-arrival, time-of-flight, dead-reckoning, and BLE-anchor multilateration. In the thesis, indoor positioning matters most through BLE: BLE-derived trajectories are the calibration signal that anchors CSI-derived crowd inference.
When it's used
- BLE trajectory ground truth for CSI calibration
- Anchor-based localisation in indoor venues
- Hybrid CSI + BLE + IMU fusion pipelines
Limitations
- NLOS multipath dominates indoor accuracy budget
- Fingerprinting databases need re-survey on environment change
- Multi-floor extension requires barometer or RF-feature distinction