document title / titre du document TRP W ORK PLAN ... - emits - ESA

TRP Work Plan 2005-2007
Description of Activities
TEC-SB/7935/dc
12/Feb/09
5.3 - High capacity multi-beam systems
TRP Reference:
Title:
T501-02EE
Active multi-beam antenna concept using advanced very high order multilayer BFN
The objective of this activity is the design, manufacturing and test of critical components for a very high order Analog Beam
Forming Network (BFN) for future Ka band broadband multimedia telecommunication missions. A promising approach may
consist in implementing an active lens able to generate a very high number of adjacent beams (>50). This system includes a
fine antenna pointing electronic correction for surface shape/deployment inaccuracy compensation. This innovative concept is
foreseen to provide improvement toward in-orbit performance tuning, implementation feasibility, manufacturing accuracy
relaxation, high reliability due to graceful degradation performance, low sensitivity to multipaction and PIM, and excellent
power to beam flexibility. Such antenna architecture with high order BFNs represent a challenge and this activity will prove the
capabilities of technology for their implementation. Advanced multilayer technologies and advanced design concepts and
technologies are expected to be used leading to a compact and cost effective solution.
Deliverables:
Detailed design and critical breadboard.
Current TRL: TRL1 Target TRL: TRL2 Application Need/Date: TRL5 by 2010
Application/Mission: Multibeam Telecom Contract Duration: 12 months
SW Clause : - Dossier0 Ref.: T-7746
Consistency with Harmonisation
Roadmap and Conclusions:
TRP Reference: T501-04EE
Development of high order propagation models for multimedia Satellite Communication
Title:
Systems
The proposed activity is aimed to the development of models of high order statistics of radiowave propagation parameters
relevant for Satellite Communication Systems operating at frequencies from 20 to 50 GHz. Existing models are mainly
focused on the description of first order statistics of propagation parameters (like the atmospheric attenuation cumulative
distribution function), but, because the design of advanced SatCom systems relies on Propagation Impairment Mitigation
Techniques (PIMT) and on its integration with network control, additional information on higher order or conditioned statistics
(e.g. fade duration, fade slope, seasonal and diurnal effects, instantaneous and long-term frequency scaling, spectral
propertied and spatial and time correlation, etc. ) are needed. As well issues related to exploitation of Ka Band for EO and
Science missions data downlink require new models.
This new activity shall start by a critical review of existing models based on current and expected system requirements (like
the QoS - Quality of Service - issues or PIMT design) along with the existing dataset collected during propagation
experiments. The main core of the activity shall be constituted by:
• Collection of data from past propagation measurements.
• A new experimental propagation campaign, based on existing satellite beacons.
• A data analysis and model development activity.
• A validation and testing activity for the assessment of the accuracy of new models.
Deliverables:
Propagation models / SW
Current TRL: TRL2 Target TRL: TRL3 Application Need/Date: SW operational by 2009
Application/Mission: Satellite Telecommunication systems Contract Duration: 24 months
SW Clause : Operational SW Dossier0 Ref.: T-7916
Consistency with Harmonisation
Roadmap and Conclusions:
Not directly linked to harmonised technology.
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