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© 2017 by OneWeb and GMV. Published by The Aerospace Corporation with permission.

GROUND SEGMENT ARCHITECTURE WORKSHOP 2017

Architecting OneWeb’s Massive Satellite Constellation Ground System

3/21/2017 2

OneWeb System OverviewConstellation Ground

Affordable, compact, multi-user access terminals

Easily installable without position aiming

Gateways across the globe

Innovative beam technology Small, inexpensive satellites using

existing technologies 900 satellites to be produced

3.4m Dish

User Terminal

45cm – 1m UT

Gateway

3/21/2017 3

Low-Cost, Mass-Produced Satellites

Small, low mass satellites with modular design

Produced in new manufacturing facility for high-rate and low-cost production

Leverages existing and proven technology

Unique modular design

Strong industry participation Electric Propulsion

Thermal Control

Electrical Power

Avionics and TT&C

User Antenna

Gateway Antenna

Mechanical Systems

Guidance, Navigation and Control

All Major Systems Designed

4

Ground Segment Architecture

JSpOC

Launch Base

NOAA

IERS

IGS

External Interfaces

Satellite Operations Center

Earth Station Control

Mission Management Element

Command & Control (GMV)

Mission Planning

Flight Dynamics

SOC Infrastructure

Engineering Analytics

Global Network Operations Center

Spacecraft Factory

Ground Segment Factory

OneWeb Internal Interfaces

TT&C Earth Station Antennas

Ground Network Antennas

Ka band Ka band

5

Distributed Engineering Using Proven COTS Software

OneWeb DevLab

periodic integration

continuous integration

DEVOPS

Software Releases

virtual machines

dev test

quality

Development Teams

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CE The CCE is based on hifly, the

GMV suite of COTS for satellite fleet monitoring and control

hifly largely unmodified, adaptations for: massive fleet support:

– Downsizing– Fleet HMIs (groups of satellites)– Massive fleets awareness (fleetDashboard)

Grouping of satellites is essential: changing an out-of-limits definition for a set of satellites at the same time…

The satellites are CCSDS compliant: supported by hifly out-of-the-box

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AU

TOM

ATI

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Nominal operations are fully automated; (known) anomaly recovery will also be

automated as mission evolves

CCE is aimed for real-time operations: its archive is short-term only (say 1 month). Processed TM is forwarded to Engineering Analytics for long-term archive

The deployment model is very simple:– One (redundant) hifly core instance per

satellite– One (redundant) set of fleet tools for the

complete fleet

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Sat

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CH

ITEC

TUR

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FEP

CCE

MME

EAEActivity Events & alarms Aggregated data

Manufacturerspacecraftdatabase

TM

TC

Flee

t

TM

TC & AUTOMATION

Spacecraft database

Schedulerflyplan

Scriptingautofly

Procedure

TC kernelhifly

TC

TM kernelhifly+archivaShort-term

TM archive

TM

Events &alarms

Central loggingcentralLog

Long-termTM archive

Processed TM TC info

Data aggregators

Fleet awarenessfleetDashboard

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FLEE

T A

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Status board: subsetof satellites in the fleet

Panels: data about the subset of satellitesin the status board

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Cards are individualsatellites…

…and can be stacked

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Cards can be flippedfor further information

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Cards can be draggedonto the trash bin

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DActing upon a card deck…

…expands the deck

Cards in the deck canbe sent back to the board

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D Satellites can be addedto the board witha static selector…

… or with a dynamic one(“show satellites in pass”)

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S Spreadsheet panel: satellite and aggregated telemetry

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PA

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SScheduler panel: satellite

operations Gantt chart

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PA

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S Events & alarms panel: satelliteOperations Gantt chart

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Technology and Fleet-Focused ConOps Enable Massive Scaling• Many technical challenges remain due to the shear scale of our mission

• Innovation and focus on operating the fleet drives our Concept of Operations

• Low risk core components such as Hifly enable this shift in thinking

• Take advantage of technologies and practices drawn from the advent of Cloud Computing