The localizability analysis for wireless sensor network is of great significance to network localization, and topology control. In this paper, the localizability problem for the bearing-based localization is investigated. An identification method for bearing rigid component is presented, and the localizability is studied for the determined bearing rigid component. In the identification process for bearing rigid component, the center node is introduced, and an approach for identifying the bearing rigid component is proposed based on the characteristic of the bearing rigid graph by using the center nodes. Then, taking the redundancy, and complexity of calculation into account, the node management strategies, and the selection principle for the center nodes are put forward subsequently to provide the guidance for determining all bearing rigid components. The localizability analysis for an determined bearing rigid component reveals its complete localizability with two arbitrary anchor nodes. Finally, some simulation results are provided to demonstrate the effectiveness, and simplicity of the proposed identification approach for bearing rigid components, and to illustrate the superiority of the bearing rigidity-based localization compared with the distance rigidity-based localization from the perspective of localizability.

中文翻译：

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基于方位刚度的无线传感器网络可定位性分析

无线传感器网络的可定位性分析对网络定位和拓扑控制具有重要意义。本文研究了基于方位的定位的可定位性问题。提出了一种轴承刚性部件的识别方法，并对确定的轴承刚性部件的定位性进行了研究。在轴承刚度的识别过程中，介绍了中心节点，提出了一种基于轴承刚度图特征的中心节点识别方法。然后，考虑到冗余和计算的复杂性，节点管理策略，随后提出中心节点的选择原则，为确定所有轴承刚性部件提供指导。对确定的轴承刚性部件的可定位性分析显示了它在两个任意锚节点的完全可定位性。最后，提供了一些仿真结果，以证明所提出的轴承刚性部件识别方法的有效性和简便性，并从定位性的角度说明了基于轴承刚度的定位与基于距离刚度的定位相比的优越性。