Authors: Ederson Ribas Machado and Anna Serra Font Supervisor: Laurent Franck SATLINK TOOL A TOOL FOR ANALYSING GEO SATCOM Project 3 Space Communication.

Authors: Ederson Ribas Machado and Anna Serra Font

Supervisor: Laurent Franck

SATLINK TOOLA TOOL FOR ANALYSING GEO SATCOM

Project 3 Space Communication Systems

Master & 3rd year program at ISAE

26th March 2015

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2SATLINK Tool - MACHADO, SERRA

•Introduction•Link Budget Analysis•LabVIEW•App development overview• Plan• Graphical User Interface

Final design Tabs functionalities

• Tests and results•SATLINK Tool Demonstration•Conclusions

CONTENTS


•The global analysis of a GEO SATCOM depends on many different parameters:

▫Position of satellite and Earth stations▫Environment▫Payload▫Digital link▫etc.

Introduction

LINK BUDGET

Objective:• Create a comprehensive tool in LabVIEW that offers the ability to

test different satellite link and derive the end-to-end system performance.

SATLINK Tool

Link Budget Analysis

•Main Parameters▫ BER, Eb/No▫ EIRP▫ G/T▫


• Accounting of loss and gains in the signal path.

LabVIEW• Why is interesting to use this tool for link budget?• Two solutions : calculating and interface

Source: SatLinktool application©

Source: SatLinktool Application©

SATLINK Tool - MACHADO, SERRA5


App development overview

•Plan


•Final design of the GUIGraphical User Interface

1) Service 2) System Geometry 3) Uplink

4) Payload 5) Downlink 6) Overall link

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Results

SATLINK Tool - MACHADO, SERRA

•ServiceTabs functionalities

Run

Press to attach the corresponding files

Enter the input parameters / drop down menus

Press to show the Help pop-up

Control Buttons


•System GeometryTabs functionalities


Tabs functionalities•Uplink


•Payload

Tabs functionalities

Press to select tab

Enter with IBO

Results

Mode indicator


•Downlink


Figures and diagrams to help

the user


•Overall Link


Help box

Input (C/N)I

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• Service/Uplink/Downlink/Payload - Antenna▫ Use of “Satellite Communications Systems” book [1]. examples . Direct application of formulas.[sections: 5.4.2, 5.4.3 , 5.6.3., 5.6.4, 5.7.4,].

• System Geometry

Tests and Results

Source: Eutelsat:www.eutelsat.com/deploy_SorbamLight/pages/azimuthElevation Source: SatLinktool Application©

[1] Maral, Gérald / Bousquet, Michel. Satellite Communication System.-5th ed. UK, 2009SATLINK Tool - MACHADO, SERRA

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• Payload▫ Antenna: Satellite – Earth station Geometry angles. β , α, β*, α*, θ, and ϕ (examples ref.[1]).

Tests and Results


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• Payload▫ Transponder: Single and Multicarrier (3 Carriers/ Transponder). Direct application of the formulas,

checked with Matlab scripts.

Tests and Results

Single Carrier Multi Carrier



SATLINK ToolDemonstration

Conclusion

•Understanding Link Budget analysis

▫Feasibility approach

• Integration Computing (LabVIEW, matlab, class theory)

▫Improve skills: programming (labVIEW – loops , elements, not line of codes),

Matlab, associating concepts seen in classes. Theory

•Further improvements

▫ Increase the possible values of BER

▫Automate the process to take values of graphs

▫Additional computing: Complete total depointing angle computation

▫More options payload


Source: SatLinktool models©

BER

Improvements

Source: From [FEN-95] – Eutelsat and CCIR Rep 720–2

AutomateData acquisition

Total depointing angle

Source: Comets sat : http://www.wtec.org/loyola/satcom/c6_s2.htm

Source: http://fas.org/spp/military/program/com/dscs_3.htm

Payload models


Thanks for your attention!

Any questions?

SATLINK Tool - MACHADO, SERRA

Authors: Ederson Ribas Machado and Anna Serra Font Supervisor: Laurent Franck SATLINK TOOL A TOOL FOR ANALYSING GEO SATCOM Project 3 Space Communication.

Documents

serra slide

results satlink tool

comprehensive tool

user slide

laurent franck satlink

downlink6 overall link

serra final design

serra accounting of