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Table 1 Symbols and explanations

From: A novel energy-efficient scheduling method for three-dimensional heterogeneous wireless sensor networks based on improved memetic algorithm and node cooperation strategy

Symbols

Explanations

R

Region of interest

\({R}_{s}\)

Sensing radius

\({R}_{c}\)

Communication radius

\({R}_{cov}\)

Coverage

\(W\)

Regional weighting matrix

\({R}_{i,j}\)

Cooperation task allocation ratio