Test - Integrate - Control


TSC, SYN and DBM are being used in the TROPOMI Instrument EGSE, the Tropospheric Optical Monitoring Instrument to be launched on the Sentinel 5 Precursor spacecraft (S5P)
TROPOMI instrument contains optical monitoring instruments SWIR and UVN for capturing images at different wavebands. A very high volume of observational data is anticipated. The TROPOMI EGSE will provide a SDP (Science Data Processor) package for implementing a “Quick Look” into the image data. This approach uses the integration of MATLAB into CMDVS, an approach that has been successfully used on previous CMDVS based instrument EGSE such as the Sentinel 2 MSI instrument and the ATLID DAPB project

The TROPOMI instrument EGSE complexity reflects that of the instrument itself. TROPOMI has its own full onboard computer, and itself implements a full set of PUS services locally within the instrument. This onboard computer also generates science data on 4 space wire interfaces, that must be captured by the instrument EGSE.

The EGSE has to implement all the typical electrical instrument-level interfaces (MIL 1553, power, discrete, thermal), plus one completely new interface type for onboard use: CameraLink. CameraLink is able to transfer image data directly from the instrument interfaces at rates even higher than those supported by Space Wire; which represents a challenging new development for the front end supplier Siemens Austria.

The “CCS” component of the Instrument EGSE is the overall test-supervisor, test scripting platform and database-driven monitoring and control for TMTC interfaces. This is of course implemented using TSC.

The CCS supervises the execution of tests run on the EuroSim real-time simulator provided by Dutch Space. This platform is used to simulate elements of the external environment to the instrument that are not present in some test configurations. It is expected that after completion of TROPOMI I-EGSE, close integration between Eurosim and TSC will become a useful feature available for future projects.