I can provide a more specific summary or help you find a full-text version of a particular study.

A recent IEEE/ION technical paper detailing methods to detect GNSS (Global Navigation Satellite System) spoofing attacks on smartphones. 3. Material Science: Samama Wood

This work provides a comprehensive overview of how high-precision positioning can work in environments where GPS signals are typically blocked.

A detailed look at financing mechanisms for sustainable infrastructure. 2. Telecommunications and Indoor Positioning ( Nel Samama )