  Unmanned ground vehicles have a huge development potential in both civilian
and military fields, and have become the focus of research in various
countries. In addition, high-precision, high-reliability sensors are
significant for UGVs' efficient operation. This paper proposes a brief review
on sensor technologies for UGVs. Firstly, characteristics of various sensors
are introduced. Then the strengths and weaknesses of different sensors as well
as their application scenarios are compared. Furthermore, sensor applications
in some existing UGVs are summarized. Finally, the hotspots of sensor
technologies are forecasted to point the development direction.
