A Survey on Autonomous Navigation Techniques

The unmanned aerial vehicles or drones are gaining popularity because of increased demand for less human intervention in the automotive sector. Customer driven markets are encouraging the unmanned vehicles oriented industries toinnovate towards the average user level. Despite the improvements in the parameters like cost, user friendliness and technological capabilities people hesitate to work with the unmanned vehicle technology and the major reason for this would be the vehicles behavior in the known and unknown environments, the unavoidable obstacles on the path of travel or the doubt on risk factor associated with the collision avoidance system. So this paper presents the various techniques used in the smooth navigation and collision/obstacle avoidance system over past years.