The P-1 type surround scanning imaging sonar (obstacle avoidance sonar) has a built-in stepper motor. With each rotation of a certain angle, the sonar emits a pulse signal and receives the target echo, forming acoustic images with different energy intensities. After the motor rotates 360 °, it can display the information of obstacles around the scanning sonar.
This device can be mounted on underwater unmanned submersibles such as ROVs and UUVs, and can detect underwater targets/obstacles through sonar scanning, achieving functions such as detection, collision avoidance, and navigation. It can also be used for unmanned ships to avoid underwater obstacles, guide entry and exit ports, and ensure the safety of unmanned ships navigating in shallow waters with multiple reefs.