0 equipment, especially on a ship, that uses sound waves to discover how deep the water is or the position of an object in the water, such as a group of fish --
1 a device on a ship that uses sound to show the position of objects under the water --
The interface has different robotic components, such as drive functions, sonar, laser, odometer, and camera.
The sonar principal returns have been plotted relative to the estimated position of the vehicle.
Individual sonar returns are marked by a dot.
The program computes the time of flight and the sonar that has received the echo.
These were very expensive items: radar, sonar, radio transmitters and receivers-large, expensive equipment, sometimes worth half a million 1955 dollars for each item.
Only integrated sonar sensor were used for obstacle detection.
Many commercially available mobile platforms already have integrated sonar sensors for the detection of obstacles around the platform.
They include, for example, mappings of two- or three-dimensional images such as portraits or underwater sonar scans into other images for comparison.
