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Energy-Level Jumping Algorithm for Global Optimization in Compressive Sensing-Based Target Localization

机译:基于压缩感知的目标定位中全局优化的能级跳跃算法

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摘要

Target localization is one of the essential tasks in almost applications of wireless sensor networks. Some traditional compressed sensing (CS)-based target localization methods may achieve low-precision target localization because of using locally optimal sparse solutions. Solving global optimization for the sparse recovery problem remains a challenge in CS-based target localization. In this paper, we propose a novel energy-level jumping algorithm to address this problem, which achieves high-precision target localization by solving the globally optimal sparse solution of lp-norm (0<p<1) minimization. By repeating the process of energy-level jumping, our proposed algorithm establishes a global convergence path from an initial point to the global minimizer. Compared with existing CS-based target localization methods, the simulation results show that our localization algorithm obtain more accurate locations of targets with the significantly reduced number of measurements.
机译:目标定位是无线传感器网络几乎所有应用中的基本任务之一。一些传统的基于压缩感知(CS)的目标定位方法可能会由于使用局部最优的稀疏解而实现低精度的目标定位。在基于CS的目标定位中,解决稀疏恢复问题的全局优化仍然是一个挑战。在本文中,我们提出了一种新颖的能级跳跃算法来解决该问题,该算法通过解决 l p -标准 0 / mo> p / mo> 1 < / mrow> 最小化。通过重复能量级跳跃的过程,我们提出的算法建立了从初始点到全局最小化器的全局收敛路径。与现有的基于CS的目标定位方法相比,仿真结果表明,我们的定位算法在减少测量次数的情况下获得了更准确的目标位置。

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