论文标题
使用无线设备辐射模式的方向估算
Orientation Estimation using Wireless Device Radiation Patterns
论文作者
论文摘要
无线设备固有地从其天线或天线中具有不均匀的能量分布。这种形式通常称为辐射模式或天线模式。我们证明，尽管只有少量的RSS测量值，但可以在没有目标设备的情况下进行估算的方向。我们通过在数据包之间的时间间隔内将界限应用于旋转量来做到这一点。使用模拟，我们表明此方法可以达到低至7.6°的平均方向误差。然后，我们执行安全分析以证明该方法对欺骗的阻力。本文着重于消费者无线设备，在这些设备中，模式不是故意高度方向性的，并且无法依靠所涉及的实体的人为运动模式，这在许多情况下是不现实或不切实际的。我们的工作集中于在国内，办公室和商业上常见的现有无线系统和基础设施。
Wireless devices inherently have a non-uniform distribution of energy from their antenna or antennas. The shape that this forms is commonly called a radiation pattern or antenna pattern. We demonstrate that orientation can be estimated without the cooperation of the target device despite only having a small number of RSS measurements per packet. We do this by applying bounds to the amount of rotation in the time interval between packets. Using simulations, we show that this method can achieve a mean orientation error as low as 7.6°. We then perform a security analysis to demonstrate the method's resistance to spoofing. This paper focuses on consumer wireless devices where patterns are not deliberately highly directional and scenarios that cannot rely on contrived movement patterns of the entities involved, which is unrealistic or impractical in many settings. Our work concentrates on existing wireless systems and infrastructure common in domestic, office, and commercial.
