TABLE 8.

Comparison of environments where active EM may be applied.

	Rural	Urban	Lake/River	Deep-sea	Sub-terranean	Nuclear	Farming	Forest
GPS	Good	Medium	Good	None	None	None	Good	Bad
Scale	Large	Large	Predefined	Large	Medium	Small	Large	Large
Pre-defined Area	No	Maybe	Yes	No	Maybe	Yes	Yes	No
Weather Sensitivity	High	Medium	Medium	Medium	Low	None	High	Medium
Robot-Type	UAV, AGV	UAV	UAV, ASV, AUV	AUV	UAV, AGV	UAV, AGV	UAV, AGV	UAV, AGV
Commu-nication	Good	Good	Good	Bad	Bad	Good	Good	Medium
Obstacles	Few	Lots	Few	Few	Medium	Lots	Medium	Lots
Light	Variable	Variable	Variable	Dark	Dark	Light	Variable	Varible (Darker)
Charging Potential	Medium	Good	Good	Medium	Bad	Bad	Good	Bad