Method for positioning wireless sensor network based on RSS
A wireless sensor and network positioning technology, applied in positioning, wireless communication, radio wave measurement system, etc., can solve the problem of large positioning error, achieve real-time improvement, reduce time complexity, and reduce the effect of greater interference on positioning accuracy
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[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0032] Multilateral measurement methods such as figure 1 shown.
[0033] Such as figure 2 Shown, flow process of the present invention is as follows:
[0034] Compressed sensing-coarse positioning stage: coarse positioning uses compressed sensing technology. Set M to be the number of sensors, N to be the number of grids, and K to be the sparseness.
[0035] First use the transformation space to describe the signal, and then directly collect a small number of linear observation data through a specific waveform. When the transformation coefficient of the N-dimensional signal X on the transformation basis is k-sparse, if the number of samples M satisfies:
[0036] M=O(k log(N / k))M<
[0037] Then the original signal can be recovered from the compressed observed data by solving an optimization problem.
[0038] Since a single target is...
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