The Study of Implementation of Precise Location of Automotive Digital Key Based on UWB

By reviewing the automotive key development history, to implement precise location is an essential way of automotive digital key system. This study decides to implement precise location method based on Ultra Wide Band(UWB) technology, following the guide line of briefly stating the ranging principle of UWB, designing three points location model, constructing UWB location deployment model of automotive cockpit, describing location algorithm and work flow of implementation of UWB location method in detail. This paper analyzes UWB location error which is within the theoretical precision accuracy range proved by test data. The advanced design idea tutors optimizing the algorithm, and the implementation of distributed computing of this location algorithm makes the study achieve the best system resources balance and power management goals. The study also implements precise location of automotive digital key based on UWB. Meanwhile the paper shows that automotive digital key fusing UWB location technology matches the direction of automobile intelligence developing.