在医疗卫生中使用无线传感器网络节点定位技术可以在较短的时间内实现对人员和医疗物资的定位。然而，在节点定位过程中测量误差、能耗等问题严重降低了定位的精确度。本文介绍了基于三边测量法的定位法、基于双曲线法的定位算法、基于三角测量法的定位法、基于三维空间的质心算法和基于球壳交集的传感器网络三维定位算法，分别针对二维平面和三维空间内的节点定位技术进行了分析比较，指出其中的不足，并总结了改进的方法。%Application of the node localization technology with wireless sensor network (WSN) in health care can realize the localization of medical personnel and supplies in a short time. However, problems such as measurement error, energy consumption and other issues involved the process of localization severely decrease the accuracy of positioning. This paper introduced the location method based on three-sided measurement, hyperbole method, and triangulation method. The node localization technology used in two-dimensions and three-dimensions are analyzed respectively and compared. Then some deifciencies are pointed out. Method for improvement was summarized.
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