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Table 2 Sensor parameters and target coverage requirement in NS1

From: Towards an optimal lifetime in heterogeneous surveillance wireless sensor networks

  Qk θ k      
Target 1 (0,1) (0,1)      
Target 2 (1,1) (1, 1)      
Target 3 (1,0) (1, 0)      
Sensor N TR i SR i E i e i s e i r e i t
Type 1 25 20 30 100 1 2 1
Type 2 25 25 20 150 1 2 1