For wireless sensor network localization, the anchor nodes provide the reference locations to other nodes and, hence, are the key component in the location-aware applications. In this study, the fixed or mobile anchor node with GPS location aware are proposed and implemented. The environmental
effects on the location information of the anchor nodes are first measured and the variation of the measured data varies in the range of 50 mini-arcseconds. The anchor nodes are battery-powered and the fixed one is equipped with an extra solar charging device. The power scheme combines the
periodic wakeup with the moving detection using the Bayes decision rule. The power consumptions for each component are analyzed and the total power consumption is then reduced by the proposed scheme. By adjusting the wakeup period, the proposed GPS anchor node can be applied to many outdoor
applications that require long last power with little maintenance.
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