WEBMAIL    |    Intranet    |    Site Map




ESA Open Invitation To Tender AO8754
Open Date: 15/07/2016
Closing Date: 09/09/2016 13:00:00

Status: ISSUED
Reference Nr.: 16.1ET.13
Prog. Ref.: TRP
Budget Ref.: E/0901-01 - TRP
Tender Type: C
Price Range: 200-500 KEURO
Products: Satellites & Probes / System Engineering Software / System Modelling & Simulation / Dedicated simulation tools (on-board computer emulators, front-end equipment simulation, ...)
Technology Domains: RF Systems, Payloads and Technologies / RF Payloads / Navigation Payloads
Establishment: ESTEC
Directorate: Directorate of Technical & Quality Management
Department: Electrical Engineering Department
Division: RF Payload Systems Division
Contract Officer: Erkelens-Sickinger, Franziska
Industrial Policy Measure: N/A - Not apply
Last Update Date: 15/07/2016
Update Reason: Tender issue

The activity scope is to trade-off GNSS payload architectures and technologies that would enable the main streams of GNSS payload Long Term Evolution (2020/2025):1) Signal Generation Flexibility/Re-configurability, 2) Power Control Flexibility, 3) EIRP Increase, 4)Performance improvements. A)Analyse the Galileo Signal Generation Subsystem, its requirements, performance and limitations (, e.g. technological, functional, etc.) in terms of signal generation flexibility/re-configurability. The following main aspects/trade-offs shall be addressed (as a minimum) and enabling technologies/predevelopments to be identified:-Storage and Generation of Navigation Data-Error Correction Coding, Interleaving-Formatting of the Navigation Data Message-Generation of PRN Spreading Codes-Signal flexibility in terms of signal bandwidth, centre frequency, chip and sub-carrier rates, interplex and power sharing etc.-Possibility to embed in one unit Digital Signal Modulation and analogue Up-Conversion-Possibility to implement Direct RF generation with use of high-speed DAC, Direct Digital Synthesisers (DDS),Software Defined Radio (SDR), etc.-Payload distortions self-compensation capabilities B)Analyse the Galileo payload high power section architecture (incl. high power amplifiers, output filters/multiplexer, navigation antenna, isolators, combiners etc...), its requirements, performance and limitations, (e.g. technological, functional, etc...) in terms of RF power allocation flexibility and EIRP increase. The following main aspects/trade-offs shall be addressed (as a minimum) and enabling technologies/ predevelopments to be identified:-Trade-off between TWTA and SSPA (e.g. GaN) amplifiers in terms of efficiency, max RF power, linearity, mass and power dissipation;-Trade-off different antenna technologies (single feed per beam, array fed reflector, direct radiating arrays etc.) in terms of gain, coverage, power handling capabilities, performance and accommodation capabilities;-Analyse at unit and architectural level power handling issues and trade-off enabling technologies (e.g. wave-guide) and architectures in terms of performance, complexity, accommodation capabilities :i) distributed amplification with spatial combination ii)distributed amplification with active antennas etc...- Analysis of flexible amplifies and its use to enable flexible power generation.

If you wish to access the documents related to the Invitation to Tender, you have to log in to the ESA Portal.