Wireless sensor network positioning algorithm based on nonlinearity optimization
A nonlinear optimization, wireless sensor technology, applied in wireless communication, network topology, electrical components and other directions, can solve the problem of low positioning accuracy, and achieve the effect of improved positioning accuracy and high positioning accuracy
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[0025] Considering the limitation of a single node resource in a wireless sensor network, the present invention adopts a distance-independent positioning technology, which specifically includes the following steps:
[0026] (1) Consistent with the strategy of DV-Hop, the unknown node obtains the minimum number of hops to the anchor node through flooding.
[0027] (2) The ratio of hops from an unknown node to different anchor nodes is used as an approximation of the distance ratio, and then a nonlinear optimization model is abstracted. Such as figure 1 As shown in (a), D(x, y) is an unknown node, A(x a ,y a ), B(x b ,y b ) and C(x c ,y c ) are three anchor nodes, assuming unknown node D(x, y) to three anchor nodes A(x a ,y a ), B(x b ,y b ), C(x c ,y c ) The minimum hops are a, b, c respectively, then there are
[0028] ( x - ...
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