For this reason,the time ordered directed acyclic graph as the model of the pre-scheduling of the EOSs was established.

For the resources of the EOSs are relatively limited compared to the requests,the conflicting imaging,which can be shot by more than one EOS,should be scheduled in advance to utilize finite imaging resource fully and reasonably and to reduce imaging scheduling time.

It is a important task for imaging scheduling to acquire more image data of good quality by making rational and efficient use of the remote sensing satellite.

To solve the imaging scheduling problem of an optical satellite,which is characterized by multiple complex constraints,including skip,memory,energy and the data transmission,an action sequence for the small number of participant tasks is designed.

Finally, in order to remove the subjectivity error produced by human eye observation and to ensure measurement accuracy, the imaging modulation index is computed.

Research on multi-objective imaging satellites scheduling techniques based on fuzzy preferences;