Search results
- The radar, which looks like a pair of cones, transmits a radio signal that reflects off the vibrating surface and rebounds back to the radar. Due to the way the signal collides with the surface vibrations, the signal returns with a slightly modulated angle that corresponds exactly to the data bit sent by the sonar signal.
news.mit.edu/2018/wireless-communication-through-water-air-0822
People also ask
How does a radar work?
Can remote sensors see deep ocean processes?
What is NASA doing in the deep ocean?
Why is deep ocean remote sensing important?
Does radar altimetry detect sea surface height in polar regions?
Can We estimate ocean dynamic topography based on Nadir radar altimeter missions?
This paper reviews the recent progress in our estimation of ocean dynamic topography and the derived surface geostrophic currents, mainly based on multiple nadir radar altimeter missions. These altimetric observations provide the cornerstone of our ocean circulation observing system from space.
Aug 22, 2018 · MIT Media Lab researchers developed a water-air communication system, Translational Acoustic-RF Communication (TARF), where an underwater transmitter directs a sonar signal to the water’s surface, causing tiny vibrations that correspond to transmitted data, which an airborne highly sensitive radar decodes.
Space-based radar (SBR) is a proposed constellation of active radar satellites for the United States Department of Defense. The SBR system would allow detection and tracking of aircraft, ocean-going vessels (similar to the Soviet US-A program), and potentially land vehicles from space.
Oct 3, 2014 · Carrying a radar altimeter, CryoSat’s main role is to provide detailed measurements of the height of the world’s ice. This allows us to see how the thickness of the ice changes, seasonally and in response to climate change. However, CryoSat works continuously, whether there is ice below or not.
Nov 3, 2020 · And yet even today's most sophisticated GPS systems are still unable to map a huge chunk of the Earth: that which is located under oceans, seas, or rivers. The technology, in effect, doesn't mix...
- 3 min
The US space agency is exploring the deep ocean to search for clues of what oceans on other planets could look like, and push the limits of science and technology in one of the most extreme...
Mar 1, 2014 · Satellite remote sensors cannot see far beneath the surface layers of the ocean. Yet many important ocean processes and features are located well below the surface and at considerable depths. Examples include Mediterranean Eddies (meddies), mixed layer depth, internal waves, and bottom topography.
