Precise Location Technology Based on Chirp Spread Spectrum
This paper introduces Chirp Spread Spectrum technology (CSS for short) and optimized location algorithm. Symmetric Double-Sided Two Way Ranging technique (SDS -TWR for short) is applied to improve accuracy and range of measurement. Linear frequency modulation ranging technology utilizes protocols combining CSMA/CA and TDMA, and adjusts dynamically transmission rate and frame length according to noise, interference and multipath to ensure optimal throughput and accurate distance information. System has anti-jamming capability and covers great distance.