在主反射平面存在下的传感器节点校准

Erik Tegler, Martin Larsson, M. Oskarsson, Kalle Åström
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引用次数: 1

摘要

在自组织传感器网络中同时估计接收方和发送方位置的最新进展使得自动校准节点位置成为可能-这是许多应用的先决条件。在人造环境中,通常有较大的平面反射面,会产生明显的混响。在本文中,我们研究了在这种反射平面存在下的接收-发送节点标定的几何问题。我们建立了一个可以用来简化估计的秩-1分解问题。我们还展示了如何仅使用秩约束来估计到达时间差情况下的偏移量。最后,我们提出了一种新的解算器,用于最小情况下的收发端位置估计。这些贡献为给定反射平面的节点校准问题提供了强大的分层方法。用合成数据和实际数据对方法进行了验证。
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Sensor node calibration in presence of a dominant reflective plane
Recent advances in simultaneous estimation of both receiver and sender positions in ad-hoc sensor networks have made it possible to automatically calibrate node positions - a prerequisite for many applications. In man-made environments there are often large planar reflective surfaces that give significant reverberations. In this paper, we study geometric problems of receiver-sender node calibration in the presence of such reflective planes. We establish a rank-1 factorization problem that can be used to simplify the estimation. We also show how to estimate offsets, in the Time difference of arrival case, using only the rank constraint. Finally, we present a new solver for the minimal cases of sender-receiver position estimation. These contributions result in a powerful stratified approach for the node calibration problem, given a reflective plane. The methods are verified with both synthetic and real data.
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