Aiming at the demand for indoor positioning technology for smart city construction

a positioning method based on propagation time is studied. Based on LabVIEW and MATLAB development platform

an ultra wideband（ UWB） simulation and experimental system is designed. The system can simulate measurement data and display real-time simulation curves and the processing results of different filtering algorithms. At the same time

the system can process actual measurement data and calculate actual position and positioning error. The system is used to analyze on different deployment of base stations. The experimental results show that

under the indoor environment

the deployment of the base station has a great influence on the positioning precision

and a reasonable deployment of the base station is beneficial to reduce the positioning error.