Measurements corner: Three-dimensional position and orientation measurements using magneto-quasistatic fields and complex image theory
Measurements corner: Three-dimensional position and orientation measurements using magneto-quasistatic fields and complex image theory
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测量角：使用磁准静态场和复图像理论进行三维位置和方向测量
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
D. Ricketts
中科院分区：
文献类型：
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作者：
D. Arumugam;J. Griffin;D. Stancil;D. Ricketts
传统的无线定位系统使用传播波，在非视距(NLOS)应用中性能下降。使用准静态电场的传统系统已被限制在短距离、渐进式测向应用中，需要射频指纹识别，或者不能提供对介质障碍的完全免疫(使用电场)。这些限制对应用程序施加了严格的限制，例如在比赛期间跟踪美式足球，其中可能需要在远距离进行位置和方向跟踪，以及当视线(LOS)被一群人阻挡时。最近，一种使用准静磁场和复镜像理论的技术被证明可以绕过这些问题，并能够进行准确的远程一维和二维测量。在这项工作中，我们利用磁准静态系统和复镜像理论在27.43m×27.43m的面积上进行了三维位置和方位测量，对接收环端测量的电压的理论表达式进行反演以确定三维位置和方位，得到的几何位置平均误差和中位数误差分别为0.77m和0.71m，倾斜方向的平均误差和中位数误差分别为9.67°和8.24°，方位角的平均误差和中位数误差分别为2.84°和2.25°。
Traditional wireless position-location systems, operating using propagating waves, suffer reduced performance in non-line-of-sight (NLoS) applications. Traditional systems that use quasistatic fields have instead been limited to short ranges, progressive direction-finding applications, require RF fingerprinting, or do not provide complete immunity to dielectric obstacles (use of electric fields). These limitations impose severe restrictions in applications such as tracking an American football during game play, where position and orientation tracking may be required over long ranges, and when the line-of-sight (LoS) is blocked by groups of people. A technique using magneto-quasistatic fields and complex image theory was recently shown to circumvent these problems, and to enable accurate long-range one-dimensional and two-dimensional measurements. In this work, we present three-dimensional position and orientation measurements using the magneto-quasistatic system and complex image theory over an area of 27.43 m × 27.43 m. Inverting the theoretical expression for the voltage measured at the terminals of the receiving loops to determine three-dimensional position and orientation resulted in mean and median geometric position errors of 0.77 m and 0.71 m, respectively; inclination orientation mean and median errors of 9.67° and 8.24°, respectively; and azimuthal orientation mean and median errors of 2.84° and 2.25°, respectively.