Sensor network positioning method based on three-hop ring band
A sensor network and positioning method technology, applied in the field of sensor network positioning based on a three-hop ring belt, can solve the problems of being susceptible to error propagation, low algorithm stability, positioning accuracy and algorithm coverage, etc., to achieve extended coverage , The effect of reducing power consumption
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[0016] The wireless sensor network node positioning method of the present invention is realized through the following steps.
[0017] 1. First discretize the wireless sensor network model, such as figure 1 shown. Assuming n is an even number, decompose Q into (n+1) 2 A square unit cell (cell), Q=[-n / 2, n / 2]×[-n / 2, n / 2]. The node position is represented by the coordinates (i, j) of the cell where it is located, -n / 2≤i, j≤n / 2. The radio frequency signal transmission of the anchor node adopts three different communication distances such as ρ, 2ρ, and 3ρ. The corresponding one-hop, two-hop, and three-hop communication ranges are centered on this node, and the side lengths are 2ρ+1 and 4ρ+1 respectively. , 6ρ+1 square. It is stipulated that 0<ρ≤n / 8.
[0018] 2. Let the coordinates of node S be (x, y), and its one-hop, two-hop, and three-hop communication rings (Cincture) are respectively:
[0019] C S ρ = ...
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