Research on Ranging with Chirp Spread Spectrum Technique in Wireless Sensor Networks

A novel ranging method for wireless sensor nodes in complex indoor communication environment is proposed.It uses Chirp Spread Spectrum technique to communicate and range.To improve the ranging accuracy,a mathematic model based on the least square principle is constructed.The experiments show that this method has low power consumption,strong anti-interference ability and large ranging scope.In addition,The mathematical model can effectively reduce the measurement error.