High Accuracy Positioning Algorithm of RFID with Single Receive Station Based on Carrier Phase

被引：0

作者：

He W. ^{[1
]}

Zhu Z.-Y. ^{[1
]}

Ren Y. ^{[1
]}

Xie L.-B. ^{[1
]}

Tian Z.-S. ^{[1
]}

机构：

[1] School of Communication and Information Engineering, Chongqing University of Post and Telecommunication, Chongqing

来源：

Tien Tzu Hsueh Pao/Acta Electronica Sinica | 2022年 / 50卷 / 03期

关键词：

Carrier phase; Indoor location; MUSIC; RFID; Single station;

D O I：

10.12263/DZXB.20210113

中图分类号：

学科分类号：

摘要：

To conquer the difficulties of indoor centimeter-level positioning and single receive station positioning technology, a multi-carrier phase distance observation equation based on frequency hopping is established by employing the technical advantage of RFID's phase synchronization, and the link distances of each carrier in different phase cycles are calculated, the integer ambiguity is solved quickly by using the distance variance, which improves the robustness of integer ambiguity solution. By using frequency hopping and improving the multiple signal classification (MUSIC) algorithm, a solution model of frequency-hop-signal direction finding is established, which can eliminate the errors caused by nonparallel incoming wave at different antenna in short distance communication and accurately measure the tag reflection signal's direction by two antennas. Finally, the joint carrier phase ranging filters the results of dual antennas direction finding to achieve centimeter-level accurate positioning single-station of RFID tags. Measurement results show that the average positioning error is less than 4 cm. © 2022, Chinese Institute of Electronics. All right reserved.

引用

页码：672 / 680

页数：8

共 18 条

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