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In this paper we detail the implementation of a Differential GPS system using only low-cost GPS receivers. The nature of the errors generated by low-cost modules is investigated and contrasted against typical error models of traditional, commercial DGPS systems. It is found that the error profile unique to low-cost GPS modules leads to a system that offers particular advantage in the horizontal plane...
Time synchronization is very important for a Time Division Multiple Access (TDMA) Wireless Sensor Networks (WSNs). In this paper, we introduce a new method of time synchronization for WSNs based on the simulated annealing algorithm which is endowed with the search process of a time-varying and can effectively avoid falling into the local minimum and finally tends to the global optimum. Errors between...
For the purposes of this paper, “gossiping” is a distributed process whose purpose is to enable the members of a group of autonomous agents to asymptotically determine, in a decentralized manner, the average of the initial values of their scalar gossip variables. This paper discusses several different deterministic protocols for gossiping which avoid deadlocks and achieve consensus under different...
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