How To Calculate Depth Of Water Using Ultrasound. D0 = s where s is the wavelength of the ultrasonic wave of 2 mhz. The depth of field depends on the adjusted lens aperture, the distance to the test object, the focal length and the pixel size of the camera.
D = v × t Height x width x length x 0.7. The time it takes for the sound pulse to reach the bottom and return is measured precisely and the depth of the ocean is calculated by knowing how fast sound travels in the water.
