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Active RFID location system based on time-difference measurement using a linear FM chirp tag signal

机译：基于线性FM Chirp标签信号的基于时差测量的有源RFID定位系统

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摘要

This paper introduces a new method for estimating location of radio frequency identification (RFID) tags for application in indoor environments. The proposed positioning scheme employs a time-difference of arrival (TDOA) range estimation algorithm. The time-difference measurement is performed by taking advantage of the de-ramp properties of a linear frequency modulation (LFM) chirp. The paper provides details of the mechanism of this LFM-TDOA scheme from the system point of view. Compared to other popular radio technologies in the indoor positioning field, this new scheme is easy to design and requires only moderate computation ability. According to the experiment results summarized in the paper, the LFM-TDOA system shows good range estimation accuracy and thus has the potential to be used in accurate indoor location application.
机译：本文介绍了一种估计射频识别（RFID）标签的位置的新方法，以便在室内环境中应用。所提出的定位方案采用时间差的到达（TDOA）范围估计算法。通过利用线性频率调制（LFM）啁啾的去斜坡特性来执行时间差测量。本文提供了从系统的角度来看该LFM-TDOA方案机制的详细信息。与室内定位领域的其他流行无线电技术相比，这种新方案易于设计，只需要适度的计算能力。根据本文总结的实验结果，LFM-TDOA系统显示出良好的范围估计精度，因此有可能用于准确的室内位置应用。

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