Abstract
Car-like robot trajectory tracking and Motion planning became increasingly important, because modern navigation technologies allowed navigating even in urban terrains. These car-like robots can be used for military and civilian domain, they may use in minefields and hazards areas application. The aim of this paper is to discuss and analysis the main sources of errors affecting the trajectory tracking of land vehicle navigation application. It will introduce the main navigation systems which generally includes the INS and GPS. A MATLAB with SIMULINK codes are generated through which it has been possible to perform several types of simulations.