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Terma Ground Segment Suite

Terma is a leading supplier of ground system solutions to support satellite missions. Terma has worked with all system components and associated processes for managing, monitoring, and controlling satellites.


The Terma Ground Segment Suite (TGSS) is a comprehensive set of tools that form a complete satellite control system, from satellite testing to operations. This allows the same tool set to be used throughout the whole spacecraft lifecycle.

TGSS is built on more than 30 years of satellite operations and testing experience, and it reflects many years of lessons learned.

The tools are built with industry and de-facto standards and are compatible with other systems.

Through easy-to-use automation, intuitive user interfaces, and customer centric features, TGSS provides a modern performant platform to ensure customers are able to reduce the cost of operations and testing activities without compromising on quality. 

THEOS-1_464GISTDA (Thailand) THEOS-1 Satellite


Satellite Control Systems

At the heart of a ground segment is a satellite control system – this is provided by our SCS5 product. In order to prepare for the operations, our PREP product is used, while STAT processes the data (TM, TC. etc) that is the result of the operations. Interfaces to ground stations are part of SCS5 – for SLE based interfaces, the UNIS product is needed.

Bepi Colombo _in _low _Earth _orbit _464BepiColumbo in low Earth orbit (image courtesy of ESA)


  • Spacecraft control system 
  • Advanced monitoring and control functions 
  • Scalable from cubesats to constellations 
  • Automated operations 


  • Ground station interfaces 
  • Provides inter-operability 


  • Spacecraft test and operations preparation 
  • Operations procedures editor 
  • Satellite database tool 
  • Data configuration management


  • Full mission performance analysis 
  • Trend analysis, anomalies and fault detection 
  • Numerous data export formats

Flight Dynamics

The Flight Dynamics System is based on the orekit product - www.orekit.org, with the visulization of the orbits, antenna, and ground station coverage handled by TRACK.


Rosetta _s _journey _2004_16_464


  • Orbit determination 
  • Orbit propagation 
  • Manoeuvre planning 
  • Command generation


  • Orbit trajectory visualization 
  • Real-time 3D animation 
  • Display includes spacecraft attitude, payload field of view (FOV), swath path 
  • Station visibility (AOS and LOS) 
  • Touch-screen interaction

Mission Planning

In preparation 

Test and Simulation

The core on ESGE is the central checkout systems - this is available in single user (TCS) or multi-user (CCS5) versions. PREP and STAT are used to prepare for testing activities and analyse the results of those tests. TEMU is a processor emulator for a number of flight processors and is at the heart of a Software Validation Facility or an Operational Simulator

Bepi -Colombo -Electrical _stack _configuration _464


  • Single user spacecraft test system 
  • Lightweight and easy to use 
  • Quick installation and setup 
  • Automated test execution 
  • Engineer-friendly test language


  • Spacecraft test system 
  • AIT from instruments through to complete spacecraft 
  • Automated test execution 
  • Flexible and scalable deployments 
  • Compliant with industry standards 
  • High performance


  • Full mission performance analysis 
  • Trend analysis, anomalies and fault detection 
  • Numerous data export formats


  • Flight processor emulator 
  • Supports ERC32, LEON2, LEON3, LEON4, ARM 
  • Bundled device models 
  • Flight software debugging 
  • Fast, accurate timing


  • Data acquisition, presentation and control for thermal test campaigns 
  • Advanced data presentation features 
  • User Friendly and intuitive user interface 
  • Supports a wide variety of heaters and data acquisition devices