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RSS FeedsSensors, Vol. 19, Pages 1385: Easily-Deployable Acoustic Local Positioning System Based on Auto-Calibrated Wireless Beacons (Sensors)

 
 

20 march 2019 18:03:43

 
Sensors, Vol. 19, Pages 1385: Easily-Deployable Acoustic Local Positioning System Based on Auto-Calibrated Wireless Beacons (Sensors)
 




Self-calibrated Acoustic Local Positioning Systems (ALPS) generally require a high consumption of hardware and software resources to obtain the user’s position at an acceptable update rate. To address this limitation, this work proposes a self-calibrated ALPS based on a software/hardware co-design approach. This working architecture allows for efficient communications, signal processing tasks, and the running of the positioning algorithm on low-cost devices. This fact also enables the real-time system operation. The proposed system is composed of a minimum of four RF-synchronized active acoustic beacons, which emit spread-spectrum modulated signals to position an unlimited number of receiver nodes. Each receiver node estimates the beacons’ position by means of an auto-calibration process and then computes its own position by means of a 3D multilateration algorithm. A set of experimental tests has been carried out where the feasibility of the proposed system is demonstrated. In these experiments, accuracies below 0.1 m are obtained in the determination of the receptor node position with respect to the set of previously-calibrated beacons.


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11 viewsCategory: Chemistry, Physics
 
Sensors, Vol. 19, Pages 1386: Target Tracking in Clutter with Extremum Seeking Control for Adaptive Detection Thresholding (Sensors)
[ASAP] A Better Understanding of the Unimolecular Dissociation Dynamics of Weakly Bound Aromatic Compounds at High Temperature: A Study on C6H6-C6F6 and Comparison with C6H6 Dimer (Journal of Physical Chemistry A)
 
 
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