**1.2. Applications of multi-robot sensor networks**

Due to its flexibility, operability, mobility and self-organization, the applications of MRSN has been increasing (Maxim & Gaurav, 2005), (Trigui S, et, al., 2012). Harsh environmental monitoring is the most popular application of MRSN, for example let wireless robots get into Amazon rainforests where it is very dangerous for human get inside or let them climb to Mount Everest where there is not enough Oxygen for human and covered by snow all over the mountain. In medical application, if the MRSN can help the nurses to do some simple task like checking body temperature and sending to a doctor, which would save much more labors in some countries those short of nurses. One of the most important utilizations of MRSN is that it can be used to detect nuclear radiation and to accomplish some other relevant tasks. The most recent example is the Fukushima nuclear leakage where if a MRSN was applied, it would have alleviated damage. Some other applications like outer space monitoring (space junk detection), industrial monitoring (quality control), disaster monitoring (forest fire detection), agriculture monitoring (soil moisture detection), traffic monitoring (intelligent transport system) etc have also much potential.
