Method for High Precision Radar Distance Measurement and Synchronization of Wireless Units
Method for High Precision Radar Distance Measurement and Synchronization of Wireless Units
复制标题
高精度雷达测距与无线单元同步方法
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
P. Gulden
中科院分区：
文献类型：
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作者：
S. Roehr;M. Vossiek;P. Gulden
本文提出了一种用于无线单元高精度同步的新方法。使用类似于标准FMCW（调频连续波）雷达原理的概念来估计两个雷达单元之间的时间和频率偏移。它允许分别显著低于100 ps和10 Hz的两个偏移的同步。这种高度精确的同步用于原型系统中，以测量类似于二次雷达的无线单元之间的距离。该原型在5.8 GHz ISM频段内工作，使用150 MHz的带宽。使用所提供的设置，在250 m的范围内测量两个雷达单元之间的距离，标准偏差小于4 cm。宽带测量原理对多径干扰是鲁棒的。它可以扩展到其他频段，非常适合直接集成到通信信道中。
In this paper we present a novel approach for high precision synchronization of wireless units. A concept similar to the standard FMCW (frequency-modulated continuous wave) radar principle is used to estimate the offset in time and in frequency between two radar units. It allows for a synchronization of both offsets significantly below 100 ps and 10 Hz, respectively. This highly accurate synchronization is used in a prototype system to measure the distance between wireless units similar to a secondary radar. The prototype operates within the 5.8 GHz ISM-Band and uses a bandwidth of 150 MHz. With the setup presented the distance between two radar units is measured with a standard deviation of less than 4 cm over a range of 250 m. The broadband measurement principle is robust towards multipath interference. It can be extended to other frequency bands and is well-suited for direct integration into communication channels.