Estimating DoA From Radio-Frequency RSSI Measurements Using an Actuated Reflector

被引：69

作者：

Hood, Bryan N. ^{[1
]}

Barooah, Prabir ^{[1
]}

机构：

[1] Univ Florida, Dept Mech & Aerosp Engn, Gainesville, FL 32611 USA

来源：

IEEE SENSORS JOURNAL | 2011年 / 11卷 / 02期

关键词：

Angle-of-arrival (AoA); direction-of-arrival (DoA); estimation; parabolic reflector; received signal strength indicator (RSSI); wireless sensor network (WSN); LOCALIZATION;

D O I：

10.1109/JSEN.2010.2070872

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We describe a proof-of-concept device and method to estimate the direction-of-arrival (DoA) of a radio signal by a receiver that is suitable for wireless sensor network (WSN) applications. The device estimates the DoA by identifying the peak of received signal strength indicator (RSSI) measurements using an actuated parabolic reflector. Automatic localization is an important requirement for deployment of wireless sensor networks. Localization from distance measurement alone is a challenging problem, but becomes easier if relative angular position measurements between pairs of radio nodes are available. Methods of DoA estimation such as phased arrays are unsuitable for wireless sensor networks due to size, cost and complexity limitations. The device and the algorithm we describe is compact and simple enough to be suitable for WSNs. Experimental results show that the error in the measured DoA has a mean smaller than 4 degrees and standard deviation of smaller than 8 degrees, in both indoor and outdoor environments in line of sight situations. Presence of moving objects in the vicinity of the transceivers seem to have an adverse effect of the measurement accuracy.

引用

页码：413 / 417

页数：5

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