Noise Power Spectral Density
Noise Power Spectral Density (PSD) is a measure of the power of a noise signal in the frequency domain. It describes the distribution of power into frequency components composing the noise. In the context of space and astronautical engineering, PSD is an important parameter for characterizing the noise performance of electronic systems, such as communication systems, sensors, and imaging devices. PSD is typically measured in units of watts per hertz (W/Hz) and is often used to calculate the signal-to-noise ratio (SNR) of a system. The lower the PSD, the better the SNR, and the more sensitive the system is to weak signals. PSD is also used to evaluate the impact of noise on system performance and to design noise reduction techniques.
Your Previous Searches
Random Picks
- Printed Circuit: A printed circuit is a board made of insulating material, such as fiberglass or plastic, with conductive pathways etched onto its surface. These pathways, also known as traces, are usually made of copper and are used to connect electronic c ... Read More >>
- Spacewalking: Spacewalking, also known as Extravehicular Activity (EVA), is the act of venturing outside a spacecraft while in orbit around the Earth or traveling in space. Spacewalking is performed by astronauts to perform maintenance, repairs, and upgr ... Read More >>
- Kevlar: Kevlar is a synthetic fiber material that is known for its high strength-to-weight ratio, heat resistance, and durability. It is commonly used in the construction of spacecraft and other astronautical equipment due to its ability to withsta ... Read More >>
Top News
Check out this interactive map of the early universe, considered largest ever cr...
A team of astronomers have put together the largest, most detailed map of the universe ever created – and you can explore it now....
News Source: USA Today on 2025-06-12
The Vera C. Rubin Observatory is about to totally transform astronomy...
With the ability to scan the entire southern night sky every three days, the huge Vera C. Rubin Observatory could be about to start solving the mysteries of the universe, from dark matter to Planet Ni...
News Source: New Scientist on 2025-06-12
Trump's proposed science cuts will have huge consequences...
The universe will still be there to marvel at, despite brutal cuts set to hit NASA and the National Science Foundation's budgets. But the damage to future research will be long-lasting, says Chanda Pr...
News Source: New Scientist on 2025-06-11
Starlink satellites are leaking radio signals that may ruin astronomy...
Our ability to study faint radio signals from when the first stars began to form is being threatened by SpaceX's Starlink satellites, which seem to be unintentionally leaking radio signals that overpo...
News Source: New Scientist on 2025-06-09
Asteroids around Venus pose possible 'invisible threat' to Earth: Should you be ...
A swarm of large asteroids likely lurking around Venus could one day pose an "invisible threat" to Earth if left unchecked, astronomers have warned....
News Source: USA Today on 2025-06-06