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Table 1 Notations for some metrics of the energy efficient barrier coverage

From: Energy-efficient border intrusion detection using wireless sensors network

Notations Meanings
R i Sensing range of sensor i i=1 …n
E r Remanning energy
t i The working time of sensor i i=1 …n
A o i j Overlap area between sensor i and
E i Initial energy reserve of sensor i ,
D i j Distance between sensor i and j
  i,j=1 …n
e S , e T , e R Energy required for sensing,
  transmitting,receiving one unit data