An unmanned ground vehicle (UGV) is a vehicle that operates while in contact with the ground and without an onboard human presence. UGVs can be used for many applications where it may be inconvenient, dangerous, or impossible to have a human operator present. UGV system solves tasks of periodical surveillance in indoor environments using vision technique, vision is a simple and accurate navigation method in indoor environment, UGVs also can be used in military and also in civilian fields like Agriculture, Manufacturing, Mining and Emergency response. This paper includes a designing simulation of GNC “navigation, guidance and control “system using two cars, using vision guidance algorithms with camera mounted on stabilized platform which is placed on a vehicle which represent guide object and it is free in two dimensions yaw and roll. Then we use and image processing to detect one of two cars which represent the target (destination) and determine its position then using navigation algorithm to track it, with achieving minimum miss distance between two cars.