Mobile robots are used in many industries for performing various tasks.
For navigation of mobile robots, their self
-
position need to be known. The
methods
used for estimating the self
-
position of mobile robots is rapidly
growing. A convenient
method is to use GPS. Although GPS provides self
-
position in outdoor environments but GPS alone is not sufficient to provide an
accuracy of the centimetre scale. Therefore, the need arises to combine the
GPS information with other techniques for accurate
localization. Several
techniques viz. odometry, environmental range sensors, time of flight range
sensors, vision based methods etc. are being employed along with GPS for
accurately localizing an autonomous vehicle. This paper discusses various
techniques
which are used for estimating the self
-
position of mobile robots
used in industries