The Ministry of Science and ICT and the Korea Meteorological Administration supported the development of the system and main body of the satellite with a total project cost of 325.2 billion won.

[1] Satellite assembly began in April 2016, and various performance tests were conducted starting in 2018.

[1] Chollian-2A can transmit high-definition color images with a resolution four times higher than that of Chollian to the ground every 10 minutes through its meteorological observation payload.

It can observe the development of localized heavy rain, so it can detect it at least 2 hours in advance.

The accuracy of typhoon path tracking is improved, and space weather observation information, such as solar flares, can also be received.