SpotFi: WiFi Indoor Localization System

This text introduces the SpotFi codebase. SpotFi is an open-source software project designed to improve WiFi localization accuracy through perception mechanisms in distributed networks. The SpotFi code implements an advanced localization algorithm that leverages channel state information (CSI) from WiFi signals to achieve centimeter-level accuracy in indoor environments. The core implementation includes signal processing techniques such as MUSIC (Multiple Signal Classification) algorithm for angle-of-arrival estimation and phase calibration methods to handle carrier frequency offset. Besides high-accuracy positioning, the SpotFi codebase supports additional functionalities like indoor navigation through WiFi data transmission and real-time location tracking. Key functions include CSI data parsing, phase sanitization, and spatial spectrum analysis. If you're interested in the SpotFi implementation, visit the project's official website for detailed documentation and code examples.