random deployment in WSN is more flexible concept especially in case Cognitive Radio Wireless Sensor Networks (CRWSN) in many field need mostly random way not deterministic deploy with in coverage area like :
Random deployed WSNs are used in many applications such as identifying unauthorized movements of enemy submarines and autonomous underwater vehicles (AUVs), active volcano monitoring by sensing signals using seismic and acoustic sensors to safeguard the people, forecasting climate changes in arctic and Antarctic regions to visualize the effects of global warming and forestfire monitoring for controlling etc.