Improved SDS-TWR Ranging Technology in UWB Positioning

In recent years, the UWB technology has become a hot spot for indoor location research because of its many advantages such as good penetration and strong anti-multipath capability. The distance measurement is the first step in positioning, so the accuracy of ranging directly affects the positioning accuracy. This article introduces several kinds of ranging technologies commonly used in wireless positioning. An improved SDS-TWR method is proposed for the clock drift problem in TOF technology. Through simulation experiments, the results show that the improved SDS-TWR method not only can reasonably use time resources, but also can effectively reduce the impact of clock drift and improve ranging accuracy in UWB positioning.