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对传感器网络应用而言,传感器节点定位是重要的支撑服务。RIPS(Radio Interferometric Positioning System)系统中提出将无线电干涉方法应用于传感网络定位,具有精度高、有效距离远且只需借助于电台设备等优势,有望成为通用的小型嵌入式设备定位的解决方案。文中介绍了无线电干涉测距和定位原理以及当前的应用进展,分析了该技术面临的关键技术难点并对部分解决方案进行了初步探讨。
For sensor network applications, sensor node positioning is an important support service. In the system of RIPS (Radio Interferometric Positioning System), it is proposed to apply the radio interference method to sensor network positioning, which has the advantages of high precision, long effective distance and only by virtue of radio equipment and the like, and is expected to be a general solution for small-sized embedded device positioning . This paper introduces the principles of radio interference ranging and positioning and the current application of the technology, analyzes the key technical difficulties faced by the technology and some of the solutions are discussed.