ESA Open Invitation To Tender AO8414
Open Date: 27/10/2015
Closing Date: 08/12/2015

Status: ISSUED
Reference Nr.: 15.1ET.07
Prog. Ref.: TRP
Budget Ref.: E/0901-01 – TRP
Special Prov.: BE+DK+FR+DE+IT+NL+ES+SE+CH+GB+IE+AT+NO+FI+PT+GR+LU+CZ+RO+PL
Tender Type: C
Price Range: 100-200 KEURO
Establishment: ESTEC
Directorate: Directorate of Technical & Quality Manag
Department: Electrical Engineering Department
Division: RF Payload Systems Division
Contract Officer: Fabrizi, Lavinia
Last Update Date: 27/10/2015
Update Reason: Tender issue

The objective of this activity is to develop an end-to-end data dissemination simulation tool to help in the detailed characterisation of the mechanisms for the control and mission data dissemination within a Galileo architecture incorporating inter-satellite links. The incorporation of inter-satellite-links to the Galileo architecture is under detailed assessment by the GNSS Evolution Program, given its visible potential to: – Enhance the overall constellation command-ability – Enhance the overall constellation monitoring-ability – Simplify the Ground Segment, reducing the number of remote ground stations – Enhance the navigation message accuracy – Enhance constellation autonomy The incorporation of inter-satellite-links to Galileo imply an important evolution of its functional and physical architecture. It enables an alternative and/or complementary mechanism for the control and mission data dissemination within the System; which detailed and complete characterization requires of sophisticated end-to-end simulation tools. The activity high level tasks are as follows: – Consolidation of the tool specification; namely functional, performance and external interfaces requirements (initial specification prepared by ESA). – Definition of the tool physical architecture; namely main physical blocks, related internal interfaces, and core algorithms. – Definition of the tool physical detailed design; namely software modules, detailed algorithms, detailed internal and external interfaces. – Development and verification of the tool. – Consolidation of the definition of the operational scenarios to be analysed (initial definition prepared by ESA). – Extensive analysis of the control and mission data dissemination (e.g. in terms of throughput, latency, PER, BER, etc.), under the above operational scenarios; which shall include at least: i) Nominal G2G FOC operational scenarios. ii) Nominal G2G IOC to G2G FOC operational scenarios iii) Preventive and corrective maintenance (at ground or/and space segment) iv) Contingencies (at ground or/and space segment) The final result of the activityshall be a tool to assist in the design of INter Satellite links for the Next Generation of GNSS.

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