17, August 2018

ESA Open Invitation to Tender AO9439
Open Date: 14/08/2018
Closing Date: 09/10/2018 13:00:00

Status: ISSUED
Reference Nr.: 18.1ET.08
Prog. Ref.: Technology Developme
Budget Ref.: E/0901-01 – Technology Developme
Tender Type: C
Price Range: 200-500 KEURO
Products: Ground Segment / Ground Station / F&T equipment / GPS Receivers
Techology Domains: RF Systems, Payloads and Technologies / Radio Navigation Systems/Subsystems / Navigation System Tools / RF Systems, Payloads and Technologies / Radio Navigation Systems/Subsystems / Ground Receivers
Establishment: ESTEC
Directorate: Directorate of Tech, Eng. & Quality
Department: Electrical Engineering Department
Division: Radio Frequency Systems & Payloads Offic
Contract Officer: Seynaeve, Christophe Rene R.
Industrial Policy Measure: C1 – Activities in open competition limited to the non-Larg…
Last Update Date: 14/08/2018
Update Reason: Tender issue

High-sensitivity GNSS receivers architectures are of interest in harsh propagation conditions in order to be able to keep tracking GNSS signals even at very low C/No conditions (typically down to around 10-20 dBHz, depending on the signal being tracked). For thispurpose, open-loop techniques can be used in the estimation of the code delay and the carrier phase and/or frequency, targeting a more robust estimation of those observables. In this process, advanced signal estimation techniques can be applied for the optimum exploitation of e.g. multi-correlation samples. This can be of particular interest in the case of BOC signals, due to the multiple peaks present in the BOC autocorrelation function. Advanced and innovative open-loop techniques exploiting in an optimum way the multi-correlator architectures shall be proposed and designed in this activity for the robust estimation of both code delay and carrier phase and frequency in harsh propagation conditions in the presence of fading and multipath at low C/No conditions (i.e. below or wellbelow 20-25 dBHz). The techniques proposed shall consider the tracking of BOC signals and the problems associated to the unambiguous tracking of those signals at low C/No conditions (even below 20-25 dBHz, depending on the BOC modulation considered). The techniques proposed shall be robust when considering no aiding information is available (i.e. the baseline shall be to consider that no aiding is available). The techniques proposed shall be assessed with SW simulations considering both acquisition and tracking stages or a combination of both if snapshot processing is performed. Those techniques shall demonstrate to be robust in cold start conditions and shall be applicable at satellite tracking level. The performance assessment shall be performed by using realistic channel models. Procurement Policy: C(1) = Activity restricted to non-prime contractors (incl. SMEs). For additional information please go to EMITS news “Industrial Policy measures for non-primes, SMEs and RD entities in ESA programmes”.

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