Minimize Flight Operations Segment (FOS)

The Flight Operation Segment (FOS) is responsible for command and control of the satellite and will be operated from ESA's European Space Operations Centre (ESOC) in Darmstadt Germany for the duration of the SENTINEL-5P mission.

Figure 1: ESA's European Space Operations Centre (ESOC)


The FOS consists of the ground station and communications network, flight operations control centre and a general purpose communication network.

The FOS provides the capability to monitor and control the satellite during all mission phases and includes the flight dynamics system facility responsible for orbit determination and prediction, and for generation of attitude and orbit control telecommands.

 

The main functions of the FOS include:

  • mission planning - long term planning of spacecraft and payload activities, covering the complete orbit cycle and repeating indefinitely. Short term planning, nominally every 2 weeks, in the form of updated mission schedules.
  • spacecraft status monitoring - taking control actions by means of telecommands, based on the spacecraft monitoring and following the mission plan.
  • spacecraft control - taking control actions by means of telecommands, based on the spacecraft monitoring and following the mission plan.
  • orbit determination and control - using tracking data and implementing orbit manoeuvres, ensuring required orbital conditions are achieved.
  • attitude determination and control - using processed attitude sensor data from spacecraft monitoring and by commanded updates of control parameters through the on-board attitude control system.
  • on-board software maintenance - integrating software images received from the spacecraft manufacturer (pre-launch and post-launch) into the telecommand process.
  • communications - communicating (TM/TC) with one satellite at a time.