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基于到达时间法(TOA)和超宽带信息帧往返传输(RTT)原理,提出一种新的UWB多目标异步定位及其算法。系统节点均具有收发功能,在测量某个节点时,往返传输(RTT)的UWB帧只需使用一次,也不需要保证接收节点时钟严格同步的光纤连接等系统条件的限制。与同步方法相比较,本方法和算法具有低复杂性、一般性和实用性。仿真结果也表明其定位精度完全可以与同步TOA法或TDOA法相媲美。
Based on the arrival time method (TOA) and ultra-wideband information frame round trip transmission (RTT) principle, a new UWB multi-target asynchronous positioning and its algorithm are proposed. The system nodes have the function of sending and receiving. When measuring a certain node, the RTW UWB frame only needs to be used once, and the system conditions such as the optical fiber connection which ensures strict synchronization of the receiving node clock are not needed. Compared with the synchronization method, the method and algorithm have low complexity, generality and practicability. Simulation results also show that its positioning accuracy can be comparable with the synchronous TOA method or TDOA method.