RIASSUNTO
The following paper is a thorough review of our research based on the localisation of robots. It is an attempt to segregate the techniques, to locate the accurate position of robots in different environments and to discuss the superlative methods to localise such robots or in some cases an unmanned vehicle. The paper is divided into three real world problem statements and a thorough analysis of the best technique amongst other is made, for all the three conditions namely underwater, indoor and space, based on a number of parameters such as the cost, accuracy, efficiency, implementation of the technique and the environmental conditions around the robot. The primary reason to select these problem statements is due to the recent trends of research in these domains. Each of the technique has been chosen after discarding several previously applied techniques and an effective approach has been put forward for localising the robots in different areas.