A Statistical Modeling Approach to Location Estimation
IEEE Transactions on Mobile Computing
A Probabilistic Room Location Service for Wireless Networked Environments
UbiComp '01 Proceedings of the 3rd international conference on Ubiquitous Computing
Range-free localization schemes for large scale sensor networks
Proceedings of the 9th annual international conference on Mobile computing and networking
Using proximity and quantized RSS for sensor localization in wireless networks
WSNA '03 Proceedings of the 2nd ACM international conference on Wireless sensor networks and applications
VOR base stations for indoor 802.11 positioning
Proceedings of the 10th annual international conference on Mobile computing and networking
The effects of ranging noise on multihop localization: an empirical study
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
Ecolocation: a sequence based technique for RF localization in wireless sensor networks
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
XYZ: a motion-enabled, power aware sensor node platform for distributed sensor network applications
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
IJCAI'03 Proceedings of the 18th international joint conference on Artificial intelligence
MoteTrack: a robust, decentralized approach to RF-Based location tracking
LoCA'05 Proceedings of the First international conference on Location- and Context-Awareness
Algorithms for Location Estimation Based on RSSI Sampling
Algorithmic Aspects of Wireless Sensor Networks
Antenna diversity using single antenna in robot communication
Digital Signal Processing
Cooperative distance classification using an IEEE 802.15.4-compliant transceiver
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
The design and implementation of a RSSI-based localization system
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
EWSN'07 Proceedings of the 4th European conference on Wireless sensor networks
Radio characterization of 802.15.4 and its impact on the design of mobile sensor networks
EWSN'08 Proceedings of the 5th European conference on Wireless sensor networks
Detecting sinkhole attack and selective forwarding attack in wireless sensor networks
ICICS'09 Proceedings of the 7th international conference on Information, communications and signal processing
A novel radio propagation radiation model for location of the capsule in GI tract
ROBIO'09 Proceedings of the 2009 international conference on Robotics and biomimetics
Tasking networked CCTV cameras and mobile phones to identify and localize multiple people
Proceedings of the 12th ACM international conference on Ubiquitous computing
Localization in wireless sensor networks with known coordinate database
EURASIP Journal on Wireless Communications and Networking - Special issue on signal processing-assisted protocols and algorithms for cooperating objects and wireless sensor networks
Experiences in measuring a human contact network for epidemiology research
Proceedings of the 6th Workshop on Hot Topics in Embedded Networked Sensors
Mobile Networks and Applications
Radio link quality estimation in wireless sensor networks: A survey
ACM Transactions on Sensor Networks (TOSN)
Automatic virtual calibration of range-based indoor localization systems
Wireless Communications & Mobile Computing
Enhancing RSSI-based tracking accuracy in wireless sensor networks
ACM Transactions on Sensor Networks (TOSN)
Sensing group proximity dynamics of firefighting teams using smartphones
Proceedings of the 2013 International Symposium on Wearable Computers
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The wide availability of radio signal strength attenuation information on wireless radios has received considerable attention as a convenient means of deriving positioning information. Although some schemes have been shown to work in some scenarios, many agree that the robustness of such schemes can be easily compromised when low power IEEE 802.15.4 radios are used. Leveraging a recently installed sensor network testbed, we provide a detailed characterization of signal strength properties and link asymmetries for the CC2420 IEEE 802.15.4 compliant radio using a monopole antenna. To quantify the several factors of signal unpredictability due to the hardware, we have collected several thousands of measurements to study the antenna orientation and calibration effects. Our results show that the often overlooked antenna orientation effects are the dominant factor of the signal strength sensitivity, especially in the case of 3-D network deployments. This suggests that the antenna effects need to be carefully considered in signal strength schemes.