Second-Order Cone Relaxation for TOA-Based Source Localization With Unknown Start Transmission Time
Second-Order Cone Relaxation for TOA-Based Source Localization With Unknown Start Transmission Time
复制标题
基于 TOA 的源定位（起始传输时间未知）的二阶锥弛豫
DOI：
10.1109/tvt.2013.2294452
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发表时间：
2014-07-01
影响因子：
6.8
通讯作者：
Jin, Ming
中科院分区：
文献类型：
--
作者：
Wang, Gang;Cai, Shu;Jin, Ming
研究了起始传输时间未知的基于到达时间（TOA）的源定位问题。在源和传感器之间没有同步的情况下，除了未知的源位置之外，TOA测量模型还具有未知的开始传输时间。在本文中，我们提出了两种不同的配方，共同估计的开始传输时间和源位置。然后，我们应用二阶锥松弛技术近似解决这两个问题。仿真结果表明，所提出的方法的性能可以接近Cramer-Rao界（CRB）。
The time-of-arrival (TOA)-based source localization problem with unknown start transmission time is investigated. Without synchronization between the source and the sensors, the TOA measurement model has an unknown start transmission time in addition to the unknown source location. In this paper, we propose two different formulations to jointly estimate the start transmission time and the source location. We then apply the second-order cone relaxation technique to approximately solve the two problems. Simulation results demonstrate that the performance of the proposed methods can be close to the Cramer-Rao bound (CRB).