Wireless sensor network distributed positioning method based on Barzilai-Borwein gradient method
A technology of wireless sensors and positioning methods, applied in location information-based services, wireless communications, network topology, etc., can solve the problems of difficult node positioning, low computational complexity, and high positioning accuracy
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[0078] A distributed positioning method for wireless sensor networks based on the Barzilai-Borwein gradient method, comprising the following steps:
[0079] 1) Randomly deploy N sensor nodes in the area to be detected to form a wireless sensor network, add BDS or GPS modules to the m nodes as nodes with known positions, and the remaining n nodes as nodes with unknown positions, that is, nodes to be positioned ,Such as figure 1 As shown, the sensor nodes are distributed in [-0.5,0.5] 2 In the unit area, the circle represents the LU node, and the solid diamond represents the LA node;
[0080] 2) Assuming that all sensor nodes deployed in the wireless sensor network are a set, if the sensor nodes can directly communicate with each other, it can be regarded as having an edge connection, so that the entire wireless sensor network can be regarded as a global undirected Graph, and the localization problem of sensor nodes is attributed to an unconstrained optimization problem, namel...
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