sonar technology
Sound-based ocean mapping
Sonar technology uses sound waves to detect and locate objects underwater.
A device emits pulses that bounce off surfaces and return; the time and pattern of echoes reveal distance, shape, and movement.
Submarines use sonar to navigate and detect vessels.
Marine biologists track whale populations with it.
The principle mirrors echolocation in bats and dolphins: The ship's sonar technology detected a wreck on the seafloor.
- sound wavesPressure disturbances carrying noise
- ocean depthsUnderwater zones beyond light
- deep sea explorationStudying oceanic abysses
- echolocationNavigation through reflected sound
- whale songsVocalizations of marine mammals
oceanography · sound reflection · shipwreck sites · ping · ping pong · Doppler effect · transducers · underwater drones · U-boats · submarine warfare · naval intelligence · sonobuoy · frequency modulation · active sonar · radar systems · seafloor · depth finder · fathom
- maritime studiesseamanship, marine navigation, oceanography, hydrography, maritime safety
- naval oceanographybathymetry, hydrography, depth sounding, nautical charts, naval charts
- naval warfarenaval battles, naval battle, battleship, destroyer, sea battles
- oceanographyoceanography, oceanographer, sonar, marine science, ocean circulation
- marine educationmarine biology, marine science, oceanography, marine conservation, field trips
- naval patrolpatrol boat, destroyer, frigate, corvette, subchaser
sonar technologythermal imaging
Detecting objects by warmth
radar technology · radar · infrared detection · satellite imagery
sonar technologyradar
Radio-wave object detection
weather radar · aerial surveillance · satellite imaging · aerial reconnaissance · astronomical observation
sonar technologyvisual observation
Gathering data by looking
passive listening · chemical detection · physical examination