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Device-Free Object Tracking Using Passive Tags

Part of the SpringerBriefs in Electrical and Computer Engineering Book Series

DOI: 10.1007/978-3-319-12646-3

ISBN: 978-3-319-12645-6

Publisher: Springer International Publishing - Springer Journals

Nov 22, 2014

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Chapter 1Introduction

Han, Jinsong; Xi, Wei; Zhao, Kun; Jiang, Zhiping

Pages: 1 –3

[Object tracking is one of the primary tasks of digital life and smart computing. In the past decade, device-based tracking techniques have matured enough to provide accurate location and motion information about the target in outdoor environments. In this chapter, we briefly introduce the device...
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Chapter 2Background

Han, Jinsong; Xi, Wei; Zhao, Kun; Jiang, Zhiping

Pages: 5 –18

[The establishment of RFID based localization requires a deep understanding on the component, operation principle, and propagation of RF signals. In this chapter, we introduce the background about RFID systems before stepping towards the RFID based localization. In addition, we introduce the...
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Chapter 3Critical State and Twins

Han, Jinsong; Xi, Wei; Zhao, Kun; Jiang, Zhiping

Pages: 19 –32

[We describe our discovery on the interference between tags, namely critical state, which forces two nearby tags unreadable. Extra RF waves reflected from a moving object may impinge the pair of tags in the critical state, called Twins, and make them readable. We leverage this phenomenon to track...
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Chapter 4Dense Deployment Based Tracking System Using Twins

Han, Jinsong; Xi, Wei; Zhao, Kun; Jiang, Zhiping

Pages: 33 –42

[Utilizing Twins as the detector, we can reuse the deployed passive RFID systems for tracking an object. The basic idea is to leverage the critical state of Twins to capture the movement of objects or human beings. In this chapter, we propose a dense deployment based tracking scheme using Twins.]
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Chapter 5Sparse Deployment Based Tracking System Using Twins

Han, Jinsong; Xi, Wei; Zhao, Kun; Jiang, Zhiping

Pages: 43 –57

[In this chapter, we present our design on a Twins based Sparse Deployment (TSD) for tracking objects. TSD is deployed at the intersection of inventory or warehouse areas. In each intersection, we only use three Twins pairs for tracking. The Twins pairs can report the moving direction of the...

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