NDLI: Two-step locating system for harsh marine port environments

Content Provider	IEEE Xplore Digital Library
Author	Hoon Choi Yeonsu Jung Yunju Baek
Copyright Year	2011
Description	Author affiliation: Dept. of Computer Engineering, Pusan National University, Busan, South Korea (Hoon Choi; Yeonsu Jung; Yunju Baek)
Abstract	With the increasing amount of traffic volume on containers, not only identification but also location estimation of assets has become an important issue in logistics automation in a port environment. The locating system is generally composed of tags, readers, and a location engine. Tags are attached to the object and obtain information via communication with readers that are installed around the tags. The engine continuously attempts to estimate the location of tags by using the obtained information. However, if we attempt to apply this common locating system to a port environment for logistics automation, the system performance is degraded because there are many steel obstacles that cause interference in the RF communication and measurement. In this paper, we propose a two-step approach for location estimation in harsh port environments. We divided readers into two types (fixed and mobile readers); hence, the location method operates in two steps for efficient wireless communication and precise measurement. We implemented all the system components and installed these at a real port for evaluation. The communication and estimation success rate is more than 50% better than that of the existing general locating system, and the location precision is substantially increased.
Starting Page	106
Ending Page	112
File Size	3284179
Page Count	7
File Format	PDF
ISBN	9781424496075
e-ISBN	9781424496068
DOI	10.1109/RFID.2011.5764609
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	localization location estimation Poles and towers Estimation Containers port environment Mobile communication Distance measurement Yttrium two-step locating system port RTLS Engines
Content Type	Text
Resource Type	Article

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