摘要：（TOA，Time of Arrival）方案是UWB定位方案的一种经典定位方案，该方案是一种基于时间的定位方案。基于此，本文设计TW-TOA方案，通过双向测距法实现定位设备间的通信，将消息的发送时间与接收时间负载到数据进行通信，从而完成两点间测距的过程，定位结果表明本文TW-TOA方案可完成精确的超宽带定位，定位精度按制在10cm--30cm之间。与现有的定位方案相比，该方案减小了时间同步模块的消耗，通过消息定时发送降低整个系统的功耗。
关键词：传输时间计算；超宽带；
Design of ultra wide band and high precision indoor positioning system based on TW-TOA
Abstract:  (TOA, time of arrival) is a classical location scheme of UWB location scheme, which is a time-based location scheme. Based on this, the TW-TOA scheme is designed in this paper. The two-way ranging method is used to realize the communication between positioning devices. The transmission time and receiving time of messages are loaded into data for communication, so as to complete the ranging process between two points. The positioning results show that the  TW-TOA scheme in this paper can complete the precise UWB positioning, and the positioning accuracy is between 10cm and 30cm according to the system. Compared with the existing positioning scheme, this scheme reduces the consumption of time synchronization module, and reduces the power consumption of the whole system through message timing transmission.
Key words： TW-TOA; UWB; 
 

传输时间计算；超宽带；