As drones become increasingly popular for various applications, including aerial photography, surveillance, and delivery services, the need for reliable obstacle avoidance and evasion techniques becomes more critical. Drone accidents due to collisions with obstacles, such as buildings, trees, and power lines, can result in property damage, injuries, and even fatalities. Therefore, drone manufacturers and researchers are exploring various sensor-based obstacle avoidance techniques to enhance the safety and efficiency of drone flights.
One of the most common sensor-based obstacle avoidance techniques for drones is using ultrasonic sensors. Ultrasonic sensors emit high-frequency sound waves and measure the time it takes for the waves to bounce back from obstacles.