The objectives of ADEOS mission are to acquire data on worldwide environmental changes such as the green house effect, ozon layer depletion, tropical rain forest deforestation, and abnormal climatic conditions, in order to contribute to international global environmental monitoring and to develop platform bus technology, inter orbital data relay technology, etc. which are necessary for the development of future earth observation systems.
ADEOS is a large satellite with a mass of approx. 3500 kg and a powergeneration capability of more than 4500 w. It is made up of thermally, electrically and mechanically independent units, which facilitate its integration and testing, including the Communications and Data Handling Subsystem (C&DH), the electrical Power Subsystem (EPS) and the Attitude and Orbital Control subsystem (AOCS). The satellite features an automatic, autonomous operation function capable of operating a large number of mission instruments, and inter orbital communication equipment to transmit observation data via data relay satellite.