Sonar (sound navigation and ranging) is a similar technique to radar, but uses sound waves (rather than electromagnetic). As a consequence, sonar required a medium for sound waves …

Feb 28, 2019 · A sonar's (or radar's) frequency determines its limit on the smallest size that it can detect and its resolution. I've heard that it's due to aliasing, if so, please explain the reason …

Could a diver swimming next to a submarine be killed or seriously injured by its SONAR? What physical aspect of SONAR affects the human body in a potential harmful way?

May 15, 2022 · Radar cross-section (RCS) is a property of the target independent of the measurement. Quoting from the Wikipedia article for : This is typically expressed in what is …

Nov 7, 2023 · The first two are arguably "details of specific radar or infrared systems" which is something you say you aren't looking for. But "why does radar have longer range than infrared …

Apr 30, 2018 · Is it possible to use sonar/radar satellite at the furthest possible orbit of earth to detect incoming dangers? Does the math add up to be possible? Ask Question Asked 7 years, …

Feb 13, 2021 · 2 Radar sensors make use of the Doppler effect to measure the radial velocity of an object. The radar's Tx antennas emit an electromagnetic wave which travels to the moving …

Classically it's hard to resolve detail in an object in a less than half the wavelength of light (abbe limit). It is possible to make an 'image' of the structure of an object if you can get closer than a …

Jun 14, 2019 · Both types of microwaves are in the S-band, so what explains the difference in absorption by water molecules at 2.45 GHz vs. scattering (reflection) at 3 GHz? Are …

Sep 7, 2021 · The textbook I'm using to understand radar is explaining the 'pulse width dilemma'. It says that shorter pulse widths can resolve targets that are close together; however, because …