Slow-scan television (SSTV)

Slow-scan television (SSTV) is a method of displaying images using a slow scanning rate. This is in contrast to regular television, which uses a much higher scanning rate. SSTV is used for transmission of static images, usually of people or artwork, over amateur radio. SSTV systems were first developed in the late 1950s, and were … Read more

Progressive download

Progressive download is a type of streaming media where the user can start to watch the content before it is completely downloaded. This is in contrast to traditional streaming media, where the user must wait for the entire file to be downloaded before playback can begin. Progressive download is sometimes also called “pseudo-streaming”. What is … Read more

United Launch Alliance (ULA)

United Launch Alliance (ULA) is a joint venture of Lockheed Martin Space and Boeing Defense, Space & Security. ULA was formed in 2006 to provide launch services for the US government. ULA launches more than half of all US government satellites, and is the provider of choice for launching classified government missions. ULA is also … Read more