METHOD FOR REDUCING THE INFORMATION AGE OF EARTH OBSERVATION SATELLITE IMAGE PRODUCTS

摘要

To reduce the age of the image product information a corresponding constellation of Earth observation satellites, it is realized from a first Earth observation satellite (Satl) constituting part of the constellation and located outside the reception area of a user ground station (2), a recording of a target area (P) which is stored as digital image data in the first satellite of Earth observation (Satl). The stored digital image data is transmitted to a ground-post station (1) provided in a region overflown by all Earth observation satellites (Satl-Sat3) as soon as the first observation satellite of the Earth (Satl) has reached the receiving zone of the ground station (1), and is then stored in an intermediate memory. The image data stored in an intermediate memory in the ground-PO box (1) is sent to another Earth observation satellite (Sat2) which arrives in the reception area (31) of the station at the same time. ground-post office box (1).