Check Symbols

Check symbols are extra characters added to a message for the purpose of error detection. In space and astronautical engineering, check symbols are commonly used in communication protocols to ensure the accuracy of transmitted data. The most common type of check symbol is the checksum, which involves adding up all the bytes in a message and appending the result to the end of the message. The receiver then performs the same calculation and compares the result to the check symbol. If they match, the message is assumed to be error-free. If they do not match, the message is assumed to contain errors and must be retransmitted. Other types of check symbols include cyclic redundancy checks (CRCs) and parity bits.
Your Previous Searches
Random Picks
  • Earth Observation Satellites: Earth Observation Satellites are spacecraft designed for remote sensing of the Earth's surface, atmosphere, and oceans. They are equipped with sensors that capture data in various wavelengths of the electromagnetic spectrum, such as visible ... Read More >>
  • Space Exploration Vehicle: A Space Exploration Vehicle (SEV) is a spacecraft designed to transport astronauts and equipment for exploration missions beyond Earth's orbit. SEVs are equipped with life support systems, propulsion systems, communication systems, and scie ... Read More >>
  • Gaia Hypothesis: The Gaia Hypothesis proposes that the Earth is a self-regulating system in which the living and non-living components interact to maintain a stable and habitable environment. This hypothesis suggests that the Earth's physical, chemical, and ... Read More >>
Top News

Orionids meteor shower is this weekend: Where and when to watch its peak...

Orionids meteor shower is this weekend: Where and when to watch its peakgo.com...

News Source: ABC News on 2024-10-18

Acting or hosting, Travis Kelce wants to continue to pursue a showbiz career. Bu...

Travis Kelce is the host of “Are You Smarter Than a Celebrity?”...

News Source: ABC News on 2024-10-09

Now is a great time to see Saturn in all its ringed glory...

My first sight of Saturn through a telescope inspired my love of space. Dig out your telescopes or visit your local astronomy club, and you may be lucky enough to spot our sixth planet's stunning thic...

News Source: New Scientist on 2024-10-09

Was Bruce Willis right? Could a nuclear blast save us from killer asteroid?...

Scientists simulated a nuclear explosion using x-ray pulses to push an asteroid-like rock away in space-like conditions....

News Source: Al Jazeera English on 2024-10-04

China's answer to SpaceX's Starlink is also threatening astronomy...

The first 18 satellites of a planned Chinese mega constellation are brighter than all but 500 stars in the sky, raising fears of a huge impact on astronomy...

News Source: New Scientist on 2024-10-03