A target group tracking algorithm for wireless sensor network using azimuthal angle of arrival information

doi:10.1088/1674-1056/21/12/120101

Chin. Phys. B ›› 2012, Vol. 21 ›› Issue (12): 120101-120101.doi: 10.1088/1674-1056/21/12/120101

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A target group tracking algorithm for wireless sensor network using azimuthal angle of arrival information

张淳^{a b}, 费树岷^{a b}, 周杏鹏^{a b}

a School of Automation, Southeast University, Nanjing 210096, China;
b Key Laboratory of Measurement and Control of Complex Systems of Engineering, Ministry of Education, Southeast University, Nanjing 210096, China

收稿日期:2012-04-26 修回日期:2012-06-14 出版日期:2012-11-01 发布日期:2012-11-01
基金资助:
Project supported by the State Key Program of the National Natural Science Foundation of China (Grant No. 60835001), the National Natural Science Foundation of China (Grant No. 61104068), and the Natural Science Foundation of Jiangsu Province, China (Grant No. BK2010200).

A target group tracking algorithm for wireless sensor network using azimuthal angle of arrival information

Zhang Chun (张淳)^{a b}, Fei Shu-Min (费树岷)^{a b}, Zhou Xing-Peng (周杏鹏)^{a b}

a School of Automation, Southeast University, Nanjing 210096, China;
b Key Laboratory of Measurement and Control of Complex Systems of Engineering, Ministry of Education, Southeast University, Nanjing 210096, China

Received:2012-04-26 Revised:2012-06-14 Online:2012-11-01 Published:2012-11-01
Contact: Zhang Chun E-mail:zhc1088@yahoo.cn
Supported by:
Project supported by the State Key Program of the National Natural Science Foundation of China (Grant No. 60835001), the National Natural Science Foundation of China (Grant No. 61104068), and the Natural Science Foundation of Jiangsu Province, China (Grant No. BK2010200).

摘要/Abstract

摘要： In this paper, we explore the technology of tracking a group of targets with correlated motions in a wireless sensor network. Since a group of targets moves collectively and is restricted within a limited region, it is not worth consuming scarce resources of sensors in computing the trajectory of each single target. Hence, in this paper, the problem is modeled as tracking a geographical continuous region covered by all targets. A tracking algorithm is proposed to estimate the region covered by the target group in each sampling time. Based on the locations of sensors and the azimuthal angle of arrival (AOA) information, the estimated region covering all the group members is obtained. Algorithm analysis provides the fundamental limits to the accuracy of localizing a target group. Simulation results show that the proposed algorithm is superior to the existing hull algorithm due to the reduction in estimation error, which is between 10% and 40% of hull algorithm, with a similar density of sensors. And when the density of sensors increases, the localization accuracy of the proposed algorithm improves dramatically.

关键词: wireless sensor network, target group, tracking, azimuthal angle, estimation error

Abstract: In this paper, we explore the technology of tracking a group of targets with correlated motions in a wireless sensor network. Since a group of targets moves collectively and is restricted within a limited region, it is not worth consuming scarce resources of sensors in computing the trajectory of each single target. Hence, in this paper, the problem is modeled as tracking a geographical continuous region covered by all targets. A tracking algorithm is proposed to estimate the region covered by the target group in each sampling time. Based on the locations of sensors and the azimuthal angle of arrival (AOA) information, the estimated region covering all the group members is obtained. Algorithm analysis provides the fundamental limits to the accuracy of localizing a target group. Simulation results show that the proposed algorithm is superior to the existing hull algorithm due to the reduction in estimation error, which is between 10% and 40% of hull algorithm, with a similar density of sensors. And when the density of sensors increases, the localization accuracy of the proposed algorithm improves dramatically.

Key words: wireless sensor network, target group, tracking, azimuthal angle, estimation error

中图分类号: (Communication forms and techniques (written, oral, electronic, etc.))

01.20.+x

张淳, 费树岷, 周杏鹏. A target group tracking algorithm for wireless sensor network using azimuthal angle of arrival information[J]. Chin. Phys. B, 2012, 21(12): 120101-120101.

Zhang Chun (张淳), Fei Shu-Min (费树岷), Zhou Xing-Peng (周杏鹏). A target group tracking algorithm for wireless sensor network using azimuthal angle of arrival information[J]. Chin. Phys. B, 2012, 21(12): 120101-120101.

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A target group tracking algorithm for wireless sensor network using azimuthal angle of arrival information

A target group tracking algorithm for wireless sensor network using azimuthal angle of arrival information

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