In the face of rapid growth of unmanned aerial vehicle (UAV) usage in many sectors, counter drone technology is a vital solution. As drones become more common, concerns about their misuse and potential threats are growing. The counter drone technology is designed to track and detect unauthorized UAV activity. They can be used for terrorist attacks, privacy violations, espionage or to disrupt critical infrastructure. The counter drone system uses a variety of techniques, such as radar, infrared and optical sensors, wireless spectrum analyses, interference and interceptions, and more. Combining these methods, counter drone technologies effectively reduce the risk posed by drones that are not in control, protecting public safety, and safeguarding vital infrastructure.