Accurate Angle-of-Arrival Measurement Using Particle Swarm Optimization

DOI: 10.4236/wsn.2010.24047   PDF   HTML     6,308 Downloads   11,571 Views   Citations


As one of the major methods for location positioning, angle-of-arrival (AOA) estimation is a significant technology in radar, sonar, radio astronomy, and mobile communications. AOA measurements can be exploited to locate mobile units, enhance communication efficiency and network capacity, and support location-aided routing, dynamic network management, and many location-based services. In this paper, we propose an algorithm for AOA estimation in colored noise fields and harsh application scenarios. By modeling the unknown noise covariance as a linear combination of known weighting matrices, a maximum likelihood (ML) criterion is established, and a particle swarm optimization (PSO) paradigm is designed to optimize the cost function. Simulation results demonstrate that the paired estimator PSO-ML significantly outperforms other popular techniques and produces superior AOA estimates.

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M. Li, K. Ho and G. Hayward, "Accurate Angle-of-Arrival Measurement Using Particle Swarm Optimization," Wireless Sensor Network, Vol. 2 No. 5, 2010, pp. 358-364. doi: 10.4236/wsn.2010.24047.

Conflicts of Interest

The authors declare no conflicts of interest.


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