NLOS Error Mitigation for TOA-Based Source Localization With Unknown Transmission Time
NLOS Error Mitigation for TOA-Based Source Localization With Unknown Transmission Time
复制标题
传输时间未知的基于 TOA 的源定位的 NLOS 错误缓解
DOI：
10.1109/jsen.2017.2698073
复制
发表时间：
2017-06-15
影响因子：
4.3
通讯作者：
Wang, Gang
中科院分区：
文献类型：
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作者：
Gao, Shangchao;Zhang, Fan;Wang, Gang
在这封信中，我们讨论了在非视距条件下使用异步传感器网络的基于到达时间的定位问题。我们构造了一个稳健的最小二乘(RLS)问题来联合估计信源位置和传输时间。针对随机最小二乘问题中未知量相互耦合的问题，通过应用一些不等式将耦合约束解耦为二阶锥约束，然后应用标准的二阶锥松弛技术得到了一个凸二阶锥规划。仿真结果验证了该方法的有效性。
In this letter, we address the time-of-arrival-based localization problem using an asynchronous sensor network under non-line-of-sight conditions. We formulate a robust least square (RLS) problem to jointly estimate the source location and the transmission time. To tackle the problem that the unknowns in the RLS problem are coupled with each other, we decouple the coupled constraint as the second-order cone constraints by applying some inequalities, and then apply the standard second-order cone relaxation technique to obtain a convex second-order cone program. Simulation results verify the performance of the proposed method.