Telemetry and Science Data Software System
- Created: Tuesday, 01 November 2011
The Telemetry and Science Data Software System (TSDSS) was designed to validate the operational health of a spacecraft, ease test verification, assist in debugging system anomalies, and provide trending data and advanced science analysis. In doing so, the system parses, processes, and organizes raw data from the Aquarius instrument both on the ground and while in space. In addition, it provides a user-friendly telemetry viewer, and an instant push-button test report generator. Existing ground data systems can parse and provide simple data processing, but have limitations in advanced science analysis and instant report generation.
The TSDSS functions as an offline
data analysis system during I&T (integration
and test) and mission operations
phases. After raw data are downloaded
from an instrument, TSDSS
ingests the data files, parses, converts
telemetry to engineering units, and
applies advanced algorithms to produce
science level 0, 1, and 2 data products.
Meanwhile, it automatically schedules
upload of the raw data to a remote server
and archives all intermediate and
final values in a MySQL database in time
order. All data saved in the system can
be straightforwardly retrieved, exported,
Using TSDSS’s interactive data visualization tool, a user can conveniently choose any combination and mathematical computation of interesting telemetry points from a large range of time periods (life cycle of mission ground data and mission operations testing), and display a graphical and statistical view of the data. With this graphical user interface (GUI), the data queried graphs can be exported and saved in multiple formats. This GUI is especially useful in trending data analysis, debugging anomalies, and advanced data analysis. At the request of the user, mission- specific instrument performance assessment reports can be generated with a simple click of a button on the GUI.
From instrument level to observatory level, the TSDSS has been operating supporting functional and performance tests and refining system calibration algorithms and coefficients, in sync with the Aquarius/SAC-D spacecraft. At the time of this reporting, it was prepared and set up to perform anomaly investigation for mission operations preceding the Aquarius/SAC-D spacecraft launch on June 10, 2011.
This work was done by Lakesha Bates and Liang Hong of Goddard Space Flight Center. GSC-16035-1