Chinese Journal of Sensors and Actuators 关键词： 无线传感器网络，三维定位，AOA，同心圆 [gap=986]Keywords: WSNs, three-dimensional positioning, AOA, concentric
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With the upgrade of medical imaging equipment, the continuous development of three-dimensional positioning system, the application field of three-dimensional medical image processing technology and 3D visualization technologies are also expanded.
随着医学影像设备的不断升级、三维定位系统的不断发展,三维医学图像处理技术及三维可视化技术被应用于临床的范围也在不断扩大。
参考来源 - 基于三维重建的脊椎测量技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
New positioning techniques are needed. To implement a GPS-free and fixed-grids-independent three-dimensional positioning system is challenging in multi-hop wireless networks.
实现不依赖GPS和固定网络设施的三维定位，是多跳移动自组网络中具有挑战性的新课题。
Objective: Measuring the secure depths and angles of Yamen acupoint with three-dimensional positioning MRI to provide the reference datas of secure depths and angles for clinic.
目的：通过使用三维定位MRI测量哑门穴进针的安全深度、角度，为临床提供安全针刺深度和角度的参考数据防止意外事故发生。
Objective: To approach the feasibility of the three-dimensional positioning and navigation with regular catheter electrodes in intracavitary with a low-frequency electrical field.
目的：探讨基于低频电场方式进行心腔内三维定位导航及心内膜重构的可行性。
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